Download 1 - Wsfcs

Last Day of Review!! Complete this practice test on
scantron. You may use the internet to help you look up
answers. Mark your answer choices on the scantron
using a #2 pencil.
1. If a person could not digest food anymore, what would probably happen to that person? Why?
A. The person would gain weight because the undigested food would sit in the person’s body.
B. The person would not lose or gain weight, but it would take longer for the body to use the
food that was eaten.
C. The person would lose weight because most of the molecules from food could not be used
for building materials.
D. Nothing would change because digestion does not affect the way food is used by the
body.
2. Which of the following statements is TRUE about molecules getting from the digestive tract to
cells of the brain and cells of the skin?
A. Molecules from food get to cells of both the brain and the skin by way of the circulatory
system.
B. Molecules from food get to cells of the brain by way of the circulatory system, but
molecules from food do not get to cells of the skin by way of the circulatory system.
C. Molecules from food get to cells of both the brain and the skin but not by way of the
circulatory system.
D. Molecules from food do not get to cells of the brain or the skin.
3. Which of the following statements is TRUE about the function of the lungs?
A. The lungs both take in oxygen molecules for cells of the body to use and eliminate carbon
dioxide molecules from the body.
B. The lungs take in oxygen molecules for cells of the body to use but do not eliminate
carbon dioxide molecules from the body.
C. The lungs eliminate carbon dioxide molecules from the body but do not take in oxygen
molecules for cells of the body to use.
D. The lungs neither take in oxygen molecules for cells of the body to use nor eliminate
carbon dioxide molecules from the body.
4. A boy eats a sandwich for lunch. After several hours, the food is in the small intestine where it
is absorbed into the body after having been chemically broken down. If we could now examine
the blood in the microscopically small blood vessels (capillaries) approaching and moving away
from his small intestine, what would we find?
A. There would be more molecules from food in the blood approaching the small intestine
than in the blood moving away from the small intestine.
B. There would be fewer molecules from food in the blood approaching the small intestine
than in the blood moving away from the small intestine.
C. There would be about the same number of molecules from food in the blood approaching
the small intestine and in the blood moving away from the small intestine.
D. There would be no molecules from food in the blood approaching the small intestine and
no molecules from food in the blood moving away from the small intestine. Even though
molecules from food are absorbed from the small intestine into the body, they do not enter
the blood.
5. Which of the following statements is TRUE about the movement of oxygen molecules between
the lungs and cells of the body?
A. Most oxygen molecules move from the lungs to cells of the body by entering
microscopically small blood vessels (capillaries) and then moving to cells through the
circulatory system.
B. Most oxygen molecules move from cells of the body to the lungs by moving through the
circulatory system and then leaving the circulatory system by way of capillaries at the
lungs.
C. Most oxygen molecules move from the lungs to the heart by way of special respiratory
tubes where the oxygen molecules mix with the blood. Blood then moves to cells of the
body by way of the circulatory system.
D. Oxygen molecules enter and leave the body by way of lungs, but they do not move
between the lungs and the blood.
6. Which of the following is TRUE about blood?
A. Blood both carries oxygen to cells and carries carbon dioxide away from cells.
B. Blood carries oxygen to cells but does not carry carbon dioxide away from cells.
C. Blood carries carbon dioxide away from cells but does not carry oxygen to cells.
D. Blood does not carry oxygen to cells and does not carry carbon dioxide away from cells.
7. How do simple sugars, oxygen, and other molecules that are needed by cells of the body enter
and exit the circulatory system?
A. Needed molecules pass through the walls of blood vessels of any size.
B. Needed molecules pass only through the walls of large blood vessels such as arteries
and veins.
C. Needed molecules pass only through the walls of microscopically small blood vessels
(capillaries).
D. Needed molecules do not pass through the walls of any blood vessels.
8. What molecules are carried in the blood to cells of your leg muscles?
A. Blood carries both oxygen molecules and simple sugar molecules to cells of your
leg muscles.
B. Blood carries oxygen molecules but not simple sugar molecules to cells of your
leg muscles.
C. Blood carries simple sugar molecules but not oxygen molecules to cells of your
leg muscles.
D. Blood does not carry either simple sugar molecules or oxygen molecules to cells of your
leg muscles.
9. How does the functioning of the lungs affect the amount of oxygen and carbon dioxide in the
blood?
A. The lungs help increase the amount of oxygen and the amount of carbon dioxide inthe
blood.
B. The lungs help increase the amount of oxygen and reduce the amount of carbon dioxide in
the blood.
C. The lungs help increase the amount of carbon dioxide and reduce the amount of oxygen in
the blood.
D. The lungs help reduce the amount of carbon dioxide and the amount of oxygen in
the blood.
10. What parts of the body have microscopically small blood vessels (capillaries) that are close
enough to cells of that part of the body so that molecules can move from the blood to those cells?
A. Capillaries are found in body organs such as the brain, lungs, and intestines, and
capillaries are also found inside external parts of the body such as arms, legs, hands,and
feet.
B. Capillaries are found in body organs such as the brain, lungs, and intestines, but
capillaries are not found inside external parts of the body such as arms, legs, hands,
and feet.
C. Capillaries are found inside external body parts such as arms, legs, hands, and feet, but
capillaries are not found in body organs such the brain, lungs, and intestines.
D. Capillaries are not found inside external body parts such as arms, legs, hands, and feet,
and capillaries are not found in body organs such as the brain, lungs, and intestines.
11. Which is TRUE about the movement of blood through the circulatory system?
A. Blood stays within blood vessels and moves to only some parts of the body.
B. Blood stays within blood vessels and moves to all parts of the body.
C. Blood moves freely through the walls of blood vessels and moves to only some parts of
the body.
D. Blood moves freely through the walls of blood vessels and moves to all parts of the body.
12. How do molecules from food move from the digestive tract to the rest of body?
A. Molecules from food are absorbed through the walls of large blood vessels such as veins
and arteries. These molecules then move through the circulatory system to all parts of the
body.
B. Molecules from food are absorbed through the walls of microscopically small blood vessels
(capillaries). These molecules then move through the circulatory system to all parts of the
body.
C. Molecules from food are absorbed through the walls of microscopically small digestive
tubes and are then carried to other parts of the body.
D. Molecules from food move through the walls of large digestive tubes and are then carried
to other parts of the body.
13. How do molecules from food and molecules of oxygen that enter the body through the mouth
and the nose move to cells of the body?
A. Molecules from food and molecules of oxygen move from the mouth and the nose to cells
of the body through a series of blood vessels, including veins, arteries, and microscopically
small blood vessels (capillaries), that extend throughout the body.
B. Molecules from food and molecules of oxygen move from the nose and the mouth to cells
of the body through special respiratory and digestive tubes that directly connect the lungs and
stomach to the rest of the body.
C. Molecules from food and molecules of oxygen move from the mouth and the nose to cells
of the body through special respiratory and digestive tubes that directly connect the mouth
and nose to the rest of the body.
D. Molecules from food and molecules of oxygen do not move from the mouth and the nose
to cells of the body. Oxygen is breathed in and out of the lungs without entering the cells of
the body, and molecules from food enter the digestive tract and pass through the body
without entering cells of the body.
14. How do molecules from food and molecules of oxygen get to the cells of the body?
A. Molecules from food and molecules of oxygen are carried by a series of tubes that connect
the mouth and nose to the rest of the body.
B. Molecules from food and molecules of oxygen are carried by a series of tubes that connect
the stomach and lungs to the rest of the body.
C. Molecules from food and molecules of oxygen are carried by a network of arteries, veins,
and microscopically small blood vessels (capillaries) to the rest of the body.
D. Molecules from food and molecules of oxygen move directly from the mouth and nose to
the rest of the body without going through any kind of tubes.
15. Which is TRUE about the movement of blood through the circulatory system?
A. Blood stays within blood vessels and moves to all parts of the body.
B. Blood stays within blood vessels and moves to only some parts of the body.
C. Blood moves freely in and out of blood vessels and moves to all parts of the body.
D. Blood moves freely in and out of blood vessels and moves to only some parts of the body.
16.How do molecules from food move from the digestive tract to the rest of body?
A. Molecules from food are absorbed through the walls of large blood vessels such as veins
and arteries. These molecules then move through the circulatory system to all parts of the
body.
B. Molecules from food are absorbed through the walls of capillaries. These molecules then
move through the circulatory system to all parts of the body.
C. Molecules of food are absorbed through the walls of microscopically small digestive tubes
and are then carried to other parts of the body.
D. Molecules from food move through the walls of large digestive tubes and are then carried
to other parts of the body.
17. What happens to the molecules from food that enter the human body through the mouth?
A. Molecules from food travel from the mouth to the digestive tract and then travel through a
series of digestive tubes to the cells in the rest of the body.
B. Molecules from food travel from the mouth to the digestive tract and then travel through a
series of blood vessels to the cells in the rest of the body.
C. Molecules from food travel from the mouth through a series of blood vessels to the cells in
the rest of the body, but the molecules from food do not pass through the digestive tract first.
D. Molecules from food are taken into the body without entering the cells of the body. All of
the molecules from food travel from the mouth to the digestive tract and leave the body
without reaching the cells in the rest of the body.
18. What is TRUE about cells?
A. All living things are made up of many cells, and all cells are the same size and shape.
B. All living things are made up of many cells, but not all cells are the same size and shape.
C. All cells are the same size and shape, but not all living things are made up of many cells.
D. Not all cells are the same size and shape, and not all living things are made up of many
cells.
19. What is TRUE about the size and shape of cells?
A. All cells are the same size and shape.
B. All cells are the same size, but not all cells are the same shape.
C. All cells are the same shape, but not all cells are the same size.
D. Different cells can have both different sizes and different shapes.
20. What is true about the relationship between cells and the organism they are part of?
A. Cells make up the basic structure of an organism, and they perform basic life functions for the
organism.
B. Cells make up the basic structure of an organism, but they do not perform basic life functions
for the organism.
C. Cells perform basic life functions for the organism, but they do not make up the basic structure
of an organism.
D. Cells do not make up the basic structure of an organism, and they do not perform basic life
functions for the organism.
21. Which of the following kinds of cells perform basic functions such as obtaining energy from
food?
A. Plant cells, but not animal cells
B. Animal cells, but not plant cells
C. Both plant cells and animal cells
D. Neither animal cells nor plant cells
22. Which of the following kinds of cells perform basic functions such as making molecules for
growth?
A. Plant cells, but not animal cells
B. Animal cells, but not plant cells
C. Both plant cells and animal cells
D. Neither animal cells nor plant cells
23. Which of the following kinds of cells perform basic functions such as making molecules for
growth?
A. Animal cells, but not bacteria cells
B. Bacteria cells, but not animal cells
C. Both animal cells and bacteria cells
D. Neither bacteria cells nor animal cells
24. Bacteria are single-celled, microscopically small organisms. What do they need to function?
A. Bacteria need molecules from food and a way to eliminate wastes.
B. Bacteria need molecules from food, but they do not need a way to eliminate wastes.
C. Bacteria need a way to eliminate wastes, but they do not need molecules from food.
D. Bacteria do not need a way to eliminate wastes, and they do not need molecules from food.
25. Bacteria are single-celled, microscopically small organisms. What do they need to function?
A. Bacteria need water and a way to eliminate wastes.
B. Bacteria need water, but they do not need a way to eliminate wastes.
C. Bacteria need a way to eliminate wastes, but they do not need water.
D. Bacteria do not need a way to eliminate wastes, and they do not need water.
26. Most animals start as a single fertilized egg cell. What parts of the body can eventually
develop from that single fertilized egg cell?
A. The skin, but not the lungs
B. The lungs, but not the skin
C. Both the skin and lungs
D. Neither the lungs nor the skin
27. Most animals start as a single fertilized egg cell. What parts of the body can eventually
develop from that single
fertilized egg cell?
A. The muscles, but not the brain
B. The brain, but not the muscles
C. Both the muscles and brain
D. Neither the brain nor the muscles
28. In plants, pollination produces fertilized cells. What parts of a plant can eventually develop
from a single fertilized cell?
A. The leaves, but not the roots
B. The roots, but not the leaves
C. Both the leaves and the roots
D. Neither the roots nor the leaves
29. In plants, pollination produces fertilized cells. What parts of a plant can eventually develop
from a single fertilized cell?
A. The flowers, but not the stems
B. The stems, but not the flowers
C. Both the flowers and the stems
D. Neither the stems nor the flowers
30. Which of the following parts of an animal's body are made of cells?
A. The muscles, but not the brain
B. The brain, but not the muscles
C. Both the muscles and brain
D. Neither the brain nor the muscles
31. Which of the following parts of plants are made of cells?
A. The leaves, but not the roots
B. The roots, but not the leaves
C. Both the leaves and the roots
D. Neither the roots nor the leaves
32. Which of the following parts of plants are made of cells?
A. The flowers, but not the stems
B. The stems, but not the flowers
C. Both the flowers and the stems
D. Neither the stems nor the flowers
33. What is TRUE about cells?
A. All living things are made up of more than one cell, and all cells are the same size
and shape.
B. All living things are made up of more than one cell, but not all cells are the same size
and shape.
C. All living things are made up of cells of the same size and shape, but not all living things are
made of more than one cell.
D. Not all living things are made up of more than one cell, and not all cells are the same size and
shape.
34. Fully-grown adults are much larger in size than young children. What happens to the cells of
the body during the growth of a child?
A. The cells of a growing child divide to make more cells, and those cells are each half the
size as the cells were before they divided. The cells do not grow before they divide again.
B. The cells of a growing child divide to make more cells, and those cells grow to become the
same size as the cells were just before they divided.
C. The cells of the body of a growing child grow, but the number of cells stays the same.
D. The size and number of cells in the body of a growing child stay the same.
35. Different types of organisms are made of different numbers of cells. What is the range in the
number of cells that organisms can be made of, from the very smallest organism to the very
largest?
A. From 1 cell to about 100 cells
B. From 1 cell to many millions of cells
C. From about 100 cells to about 1,000 cells
D. From about 100 cells to many millions of cells
36. What is TRUE about the relationship between cells and the organism they are part of?
A. Cells are organized into body structures, and they perform basic life functions for the
organism.
B. Cells are organized into body structures, but they do not perform basic life functions for the
organism.
C. Cells perform basic life functions for the organism, but they are not organized into body
structures.
D. Cells are not organized into body structures, and they do not perform basic life functions
for the organism.
37. A specialized function of living nerve cells is to transmit electrical signals from the brain to the
rest of the body. Which of the following is TRUE of nerve cells?
A. Nerve cells obtain energy from food, and they eliminate their own waste material.
B. Nerve cells obtain energy from food, but they do not eliminate their own waste material.
C. Nerve cells eliminate their own waste material, but they do not obtain energy from food.
D. Nerve cells do not eliminate their own waste material, and they do not obtain energy from
food.
38. Red blood cells carry oxygen. Which of the following types of cells use oxygen carried by red
blood cells?
A. Both nerve cells and cells of the digestive tract
B. Nerve cells, but not cells of the digestive tract
C. Cells of the digestive tract, but not nerve cells
D. Neither cells of the digestive tract nor nerve cells
39. Red blood cells carry oxygen. Which of the following types of cells use oxygen carried by red
blood cells?
A. Both cells of the lung and cells of the rest of the body
B. Cells of the lung, but not cells of the rest of the body
C. Cells of the rest of the body, but not cells of the lungs
D. Neither cells of the rest of the body nor lung cells
40. Which of the following is TRUE of muscle cells?
A. Muscle cells obtain energy from food, and they eliminate their own waste material.
B. Muscle cells obtain energy from food, but they do not eliminate their own waste material.
C. Muscle cells eliminate their own waste material, but they do not obtain energy from food.
D. Muscle cells do not eliminate their own waste material, and they do not obtain energy from
food.
41. Which of the following is TRUE of muscle cells?
A. Muscle cells obtain energy from food, and they make molecules for growth.
B. Muscle cells obtain energy from food, but they do not make molecules for growth.
C. Muscle cells make molecules for growth, but they do not obtain energy from food.
D. Muscle cells do not make molecules for growth, and they do not obtain energy from food.
42. Which type of molecule contains genetic information that is passed from parents to offspring?
A. Fat molecules
B. DNA molecules
C. Protein molecules
D. Carbohydrate molecules
43. Where are DNA molecules found in an animal's body?
A. Inside all types of cells in an animal's body
B. Inside an animal's body but not inside any cells in an animal's body
C. Inside sex cells but not inside any other types of cells in an animal's body
D. Inside blood cells but not inside any other types of cells in an animal's body
44. Where are chromosomes located in an animal's body?
A. Inside all types of cells in an animal's body
B. Inside an animal's body but not inside any cells in an animal's body
C. Inside sex cells but not inside any other types of cells in an animal's body
D. Inside blood cells but not inside any other types of cells in an animal's body
45. In sexually reproducing organisms, such as humans, which of the following statements is
TRUE about the genetic information that is passed from parents to children?
A. All of the genetic information comes from one of the parents.
B. Half of the genetic information comes from each of the parents.
C. Some of the genetic information comes from each of the parents, but the amount that
comes from each parent cannot be predicted.
D. Sons receive most of their genetic information from their fathers, and daughters receive
most of their genetic information from their mothers.
46. Sex cells (sperm or egg cells) in mice contain 20 chromosomes. How many chromosomes
does the fertilized egg cell of a mouse contain? (A fertilized egg cell is an egg cell that has
combined with a sperm cell.)
A. 10
B. 20
C. 40
D. 80
47. In sexually reproducing organisms, such as humans, which of the following is TRUE about the
genetic information in the body cells (any cells in the body except sex cells) of a son and his
mother?
A. All of the son's body cells contain some genetic information from his mother.
B. Exactly half of the son's body cells contain genetic information from his mother.
C. None of the son's body cells contain any genetic information from his mother.
D. Each type of body cell contains a different amount of genetic information from his mother.
48. How does the genetic information in a fertilized egg cell (an egg cell that has combined with a
sperm cell) compare with the genetic information in the skin cells of the adult organism that
develops from the fertilized egg cell?
A. The skin cells in the adult organism contain the same genetic information that was in the
fertilized egg cell.
B. The skin cells in the adult organism still contain some of the genetic information that was in
the fertilized egg cell, but not very much of the information.
C. Some of the skin cells in the adult organism contain all of the genetic information that was
in the fertilized egg cell, but other skin cells contain just a little of the information.
D. None of the skin cells in the adult organism contains any of the genetic information that
was in the fertilized egg cell.
49. In some kinds of organisms, reproduction occurs asexually (without the combining of two sex
cells). Which of the following statements is TRUE about the information that is passed in DNA
molecules from parents to offspring in this type of reproduction?
A. All of the information in the parent's DNA molecules is passed to its offspring.
B. Half of the information in the parent's DNA molecules is passed to its offspring.
C. None of the information in the parent's DNA molecules is passed to its offspring
D. The amount of information in the parent's DNA molecules that is passed to its offspring
varies from offspring to offspring.
50. Which of the following statements is TRUE about the brain cells, skin cells, and DNA
molecules in an individual human?
A. The brain cells contain DNA molecules, but the skin cells do not.
B. The skin cells contain DNA molecules, but the brain cells do not.
C. The brain cells and skin cells both contain DNA molecules, and their DNA molecules contain
the same genetic information.
D. The brain cells and skin cells both contain DNA molecules, but their DNA molecules contain
different genetic information.
51. Genetic information affects eye color. Where in the body would this genetic information be
found?
A. In the cells of the eye, but not in any other kind of body cell
B. In the cells of the brain, but not in any other kind of body cell
C. In the cells of the eye and the cells of the brain, but not in any other kind of body cell
D. In all the different kinds of body cells
52. The DNA molecules in skin cells contain information about which of the following?
A. Eye color and skin color
B. Eye color, but not skin color
C. Skin color, but not eye color
D. Neither eye color nor skin color
53. The DNA molecules in muscle cells contain information about which of the following?
A. Eye color and skin color
B. Eye color, but not skin color
C. Skin color, but not eye color
D. Neither eye color nor skin color
54. Which of the following could be affected by the information in the DNA molecules of an
organism?
A. Both an organism's physical characteristics and the function of the organism's cells
B. An organism's physical characteristics but not the function of the organism's cells
C. The function of the organism's cells but not the organism's physical characteristics
D. Neither an organism's physical characteristics nor the function of the organism's cells
55. Which of the following could be affected by the information in the DNA molecules of an
organism such as a human?
A. Both the human’s physical characteristics and its behaviors
B. The human’s physical characteristics but not its behaviors
C. The human’s behaviors but not its physical characteristics
D. Neither the human’s physical characteristics nor its behaviors
56. Which of the following could be affected by the information in the DNA molecules of an
organism such as a plant?
A. Both the plant’s physical characteristics and its behaviors
B. The plant’s physical characteristics but not its behaviors
C. The plant’s behaviors but not its physical characteristics
D. Neither the plant’s physical characteristics nor its behaviors
57. The eye color of children often resembles the eye color of their parents. Which of the
following is genetically passed from parents to children?
A. Particles of color are passed from parents to children.
B. Cells that become the colored part of the eye are passed from parents to children.
C. Molecules that contain the information that determines eye color are passed from parents
to children.
D. Nothing having anything to do with eye color is passed from parents to children.
58. Which of the following contain hereditary information?
A. Genes and DNA molecules
B. Genes but not DNA molecules
C. DNA molecules but not genes
D. Neither genes nor DNA molecules
59. Which of the following contain genetic information?
A. Chromosomes and DNA molecules
B. Chromosomes but not DNA molecules
C. DNA molecules but not chromosomes
D. Neither chromosomes nor DNA molecules
60. Like most animals, mice reproduce sexually. The skin cells of a mouse each contain 40
chromosomes. How many chromosomes does a sperm cell of a male mouse contain?
A. 10
B. 20
C. 40
D. 80
61. Which of the following is TRUE about the number of DNA molecules in an unfertilized egg cell
of an organism compared to the number of DNA molecules in a fertilized egg cell of that same
organism? (A fertilized egg cell is an egg cell that has combined with a sperm cell.)
A. An unfertilized egg cell contains half as many DNA molecules as a fertilized egg cell.
B. An unfertilized egg cell contains the same number of DNA molecules as a fertilized egg
cell.
C. An unfertilized egg cell contains twice as many DNA molecules as a fertilized egg cell.
D. An unfertilized egg cell contains four times as many DNA molecules as a fertilized egg
cell.
62. A skin cell from a cow contains 60 DNA molecules. How many DNA molecules are found in
new skin cells that develop as the cow grows?
A. 30
B. 60
C. 90
D. 120
63. Which of the following statements is TRUE about the genetic information in the cells of the
leaves and the cells of the flowers of the same plant?
A. The cells of the plant’s leaves and its flowers contain the same genetic information.
B. The cells of the plant’s leaves and its flowers contain different genetic information.
C. The cells of the plant’s leaves contain genetic information, but the cells of its flowers do
not.
D. Neither the cells of the plant’s leaves nor the cells of its flowers contain genetic
information.
64. A mouse's tail gets caught in a mouse trap. When the mouse pulls free, its tail gets cut off. If
the mouse has babies later, how will this affect the length of the tails of its babies?
A. It will affect the length of the tails of all the babies.
B. It will affect the length of the tails of some of the babies.
C. It will not affect the length of the tails of any of the babies.
D. It depends on how old the mouse was when its tail was cut off.
65. Humans, dogs, and trees are all living things. In which of these organisms would you find
DNA molecules?
A. Only in humans
B. Only in humans and dogs
C. In humans, dogs, and trees
D. DNA molecules are not found in any of these organisms
66. Humans, butterflies, and trees are all living things. In which of these organisms would you find
DNA molecules?
A. Only in humans
B. Only in humans and butterflies
C. In humans, butterflies, and trees
D. In none of these organisms
67. In sexually reproducing organisms, such as humans, which of the following is TRUE about the
DNA in each of the body cells (any cell in the body except a sex cell) of a daughter and her
father?
A. Less than 50% of the DNA in each of the daughter’s body cells is from her father.
B. Exactly 50% of the DNA in each of the daughter’s body cells is from her father.
C. More than 50% of the DNA in each of the daughter’s body cells is from her father.
D. Each type of body cell in the daughter contains a different amount of DNA from her father.
68. In sexually reproducing organisms, such as humans, which of the following is TRUE about
how many of a son’s body cells (any cell in the body except a sex cell) contain DNA from his
mother?
A. A little less than 50% of a son’s body cells contain some DNA from his mother.
B. 50% of a son’s body cells contain some DNA from his mother.
C. A little more than 50% of a son’s body cells contain some DNA from his mother.
D. 100% of a son’s body cells contain some DNA from his mother.
69. In many species of plants, reproduction can occur asexually (without the combining of two sex
cells). Which of the following statements is TRUE about the DNA passed from parent to offspring
in this type of reproduction?
A. All of the parent’s DNA is passed to its offspring.
B. Half of the parent’s DNA is passed to its offspring.
C. None of the parent’s DNA is passed to its offspring.
D. The amount of DNA passed from parent to offspring varies from offspring to offspring.
70. In some kinds of organisms, reproduction occurs asexually (without the combining of two sex
cells). How much of the DNA of the offspring is identical to the DNA of its parent in these types of
organisms?
A. All of the DNA
B. None of the DNA
C. Half of the DNA
D. It varies from offspring to offspring.
71. How many DNA molecules are in an unfertilized egg cell compared to a fertilized egg cell? (A
fertilized egg cell is an egg cell that has combined with a sperm cell.)
A. There are half as many DNA molecules in an unfertilized egg cell as in a fertilized egg cell.
B. There are the same number of DNA molecules in an unfertilized egg cell as in a fertilized
egg cell.
C. There are twice as many DNA molecules in an unfertilized egg cell as in a fertilized egg
cell.
D. There are four times as many DNA molecules in an unfertilized egg cell as in a fertilized
egg cell.
72. Which of the following is TRUE about the number of DNA molecules in an unfertilized egg cell
of an organism compared to the number of DNA molecules in a fertilized egg cell of that same
organism? (A fertilized egg cell is an egg cell that has combined with a sperm cell.)
A. An unfertilized egg cell contains half as many DNA molecules as a fertilized egg cell.
B. An unfertilized egg cell contains the same number of DNA molecules as a fertilized egg
cell.
C. An unfertilized egg cell contains twice as many DNA molecules as a fertilized egg cell.
D. An unfertilized egg cell contains four times as many DNA molecules as a fertilized egg
cell.
73. In sexually reproducing organisms, such as humans, which of the following statements is
TRUE about the DNA found in the cells of the children?
A. All of the DNA in the cells of the children contains genetic information from just one of the
parents.
B. Half of the DNA in the cells of the children contains genetic information from one parent,
and half of the DNA contains genetic information from the other parent.
C. Some of the DNA in the cells of the children contains genetic information from each
parent, but the amount of DNA containing information from each parent cannot be predicted.
D. Most of the DNA in the cells of the sons contains genetic information from the father, and
most of the DNA in the cells of the daughters contains genetic information from the mother.
74. A cat gets into a fight, and the tips of both of its ears get torn off. If the cat has kittens later,
how will this affect the shapes of its kittens’ ears?
A. All of the kittens’ ears will be missing the tips.
B. Some of the kittens’ ears will be missing the tips.
C. All of the kittens’ ears will be slightly smaller.
D. It will have no effect on the ears of any of the kittens.