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Science Test Part B Chapter 1**
Name__________________________#____
Write the letter of the best choice.
____1. Which of these are not found in animal cells?
A. chloroplasts and organelles
B. cell walls and chloroplasts
____ 2. Which process occurs as food and oxygen combine in mitochondria?
H. reproduction
J. respiration
____ 3. Which process produces reproductive cells that have half as many
chromosomes as body cells have?
B. meiosis
C. mitosis
____ 4. How many chromosomes does a human reproductive cell have?
A. 23 chromosomes
C. 46 chromosomes
5. In 1665,
[Robert Hooke Anton van Leeuwanhoek ]
built a microscope that
magnified things 30 times.
He looked at a thin piece of
[
cork
pond water
fish
]
and saw that it was made of tiny boxlike sections.
He called these sections
[
boxes
cells
fish
].
That means small compartments.
6. In 1675,
[Robert Hooke Anton van Leeuwanhoek ]
could magnify things
[
30 times
He looked at one-celled organisms found in [
built a microscope that
60 times
cork
300 times
pond water
fish
].
]
Complete these Punnet squares to show the first and the second generation of pea
plants from Mendel’s experiments. P is for purple and p is for white.
P
P
P
Pp
______
P
___
P
Pp
_ P __
______
_ p __
First Generation
p
___
______
______
______
______
Second Generation
7..Part A What can you infer about the dominant and recessive factors (genes) of the
pea plants? When will each factor be seen (expressed)/
I can infer that the dominate color is ________,because it
The recessive color is _____________. The recessive traits only is seen (expressed
when _______________________________________________________________.
The dominate color is seen or expressed most of the time because ______________
____________________________________________________________________
8. Part B What factors (genes) do you think the plant with white flowers inherited from
both its parents?
The white flowers would have inherited a ______________factor (gene) from the
female part of the plant and would have inherited a ____________________ factor
(gene) from the male part of the plant.
9. Why did Gregor Mendel use pea plants in his study of heredity? Give two reasons.
Gregor Mendel used pea plants in his study of heredity because pea plants
______________________________________________________________________
Gregor Mendel also used pea plants in his study of heredity because pea plants
______________________________________________________________________
10. When we did an investigation and made models of plant and animal cells we
noticed some similarities and some differences. Compare plant and animal cells.
Plant and animal cells have many similarities and a couple of important differences,
Both plant and animal cells have some of the same organelles. They both have
______________________, ______________________, _______________________,
______________________, ______________________, and ___________________.
The plant cells has two other important parts, the _______________________ and the
_______________________. These parts are important because_________________
_____________________________________________________________________
_____________________________________________________________________
Plant
BOTH
Animal
11. Deoxyribonucleic Acid. Is also known by the three letters. ____ ___ ____ .
12. Mitosis in human beings begins with a cell that has _______ chromosomes.
It produces cells that have _______ chromosomes.
Circle one.
13. Mitosis is the cell division process that makes
[growth and repair cells;
reproductive cells]
14. Meiosis in human beings begins with a cell that has ______ chromosomes.
It produces cells that have ______chromosomes.
Circle one.
15. Meiosis is the cell division process that makes
[growth and repair cells;
reproductive cells]
16. Which is it, sexual reproduction or asexual reproduction? Make an X.
Sexual
Asexual
Reproduction
Reproduction
A flower blooms, dies and leaves a seed pod full of seeds
A paramecium makes an exact copy of itself.
A cat has kittens.
Ava breaks off a vine from one of her plants. She sticks it in water and it grows roots.
She plants it and it becomes a new healthy plant.
A strawberry plant has “baby” strawberry plants on the end of runners.
A bee carries pollen from one flower to another.
A flower has a stigma with ovules and an anther with pollen.