Download 1) Which of the following is the best example of scientific model? A

1) Which of the following is the best example of scientific model?
A) A group of zoo monkeys to represent behavior in a natural environment
B) A computer simulation of Earth’s climate changes
C) An x-ray showing multiple fracture in a bone
D) A salt-water aquarium in the home of a fish enthusiast
2) Plants produce O2 during photosynthesis by
A) Splitting CO2
C) Degradation of the stroma
B) Splitting water
D) Breaking up sugar molecules
3) What did Hershey and Chase’s work show?
A) Genes are probably made of DNA.
D) Viruses contain DNA but not protein
B) Genes are probably made of protein
E) Bacteria contain DNA but not protein
C) Genes are made of both DNA and protein
4) In eukaryotic cells, most of cellular respiration takes place in the
A) Nuclei
D) Cell walls
B) Cytoplasm
E) Centrioles
C) Mitochondria
5) A scientist wants to know how a certain fertilizer affects the
growth of tomato plants growing in two different soils. What
conclusion can be drawn from the graph shown here?
A) Soil 1 and Soil 2 are the same.
B) The fertilizer has a greater effect in the Soil 1.
C) The fertilizer has a greater effect in Soil 2.
D) Soil 1 absorbed more fertilizer than Soil 2.
6) The leaves of a plant appear green because chlorophyll
A) Reflects blue light
C) Reflects green light
B) Absorbs blue light
D) Absorbs green light
7) Which cell structures are sometimes found attached to the endoplasmic reticulum?
A) Chloroplasts
D) Nuclei
B) Mitochondria
E) Ribosomes
C) Vaculoles
8) Which of the following is NOT an example of active transport:
I. Facilitated Diffusion
II. Osmosis
A) I only
D) II and III only
B) III only
E) I, II, and III
C) I and II only
9) Pyruvate can be regarded as the end product of
A) Glycolysis
C) Fermentation
B) Acetyl-CoA formation
D) The Krebs cycle
III. Diffusion
10) Students hypothesized that water pollution affects the growth of fish. In an experiment, they added the same
amount of food to ponds polluted by fertilizers and industrial waste. They measured fish growth and found that
most fish grow slowly in each of these environments. What part of their experiment did they forget to include?
A) A group to serve as a control
C) A theory to explain their results
B) A hypothesis to test
D) A procedure to follow
11) Which of the following does not describe the structure of DNA?
A) Double helix
B) Nucleotide polymer
C) Sugar-phosphate backbone
12) Substances that are non-polar and are repelled by water are
A) Hydrolyzed
B) Nonpolar
13) Which of the following is not found in a prokaryotic cell?
A) Ribosomes
B) DNA
C) Plasma membrane
D) Contain adenine-uracil pairs
E) Double stranded
C) Hydropillic
D) Hydrophobic
D) Cytoplasm
E) Nucleus
14) What term describes an explanation that a scientist offers to answer a scientific question?
A) Conclusion
C) dependent variable
B) independent variable
D) hypothesis
15) Animal cells have all of the following except
A) Mitochondria
B) Chloroplasts
C) A nucleus
16) What statement is true about scientific theories?
A) They cannot be changed.
B) They are supported by a wide range of evidence.
D) A cell membrane
E) Golgi apparatus
C) They have been proved by scientists.
D) They are not readily accepted by scientists.
17) Which of the following properties of water protects aquatic organisms during a long, cold, winter?
A) Cohesion
C) Temperature-stabilizing
B) Solvent properties
D) None of the above
18) The net gain of energy from glycolysis is
A) 4 ATP molecules
C) 8 ADP molecules
B) 2 ATP molecules
D) 3 pyruvic acid molecules
19) The movement of water molecules across a selectively permeable membrane is known as
A) Exocytosis
C) Endocytosis
B) Phagocytosis
D) Osmosis
20) Which is the correct sequence of scientific inquiry?
A) forming hypotheses, observing, testing hypotheses, evaluating results, analyzing data
B) observing, testing hypotheses, forming hypotheses, analyzing data, evaluating results
C) observing, forming hypotheses, testing hypotheses, analyzing data, evaluating results
D) analyzing data, forming hypotheses, testing hypotheses, observing, evaluating results
21) A nucleotide does not contain
A) A 5 carbon sugar
C) A nitrogen base
B) Polymerase
D) A phosphate group
22) What process is represented by the following chemical equation?
6CO2 + 6H2O +light C6H12O6 + 6O2
A) Photosynthesis
B) Fermentation
C) Glycolysis
D) Cellular respiration
23) The experimental group and the control group are identical except for…
A) The number of variables studied
C) The two variables under study
B) The variable under study
D) The number of experiments performed on each group.
24) Which of the following incorrectly matches a cell structure with its function?
A) Cell membrane: protein synthesis
C) Vacuole: storage
B) Nucleus: information storage
D) Chloroplast: energy conversion
25) The two products of the light-dependent reactions that are required for the light-independent chemistry are
__________ and ________.
A) CO2 and H2O
C) O2 and ATP
B) O2 and NADPH
D) ATP and NADPH
26) Proteins are long molecules that are built from various combinations of
A) Carbohydrates
C) Lipids
B) Nucleic acids
D) Amino acids
27) The rate at which materials enter and leave through the cell membrane depends on the cell’s
A) Volume
C) Mass
B) Weight
D) Surface area
28) The primary function of DNA is to
A) Provide energy for a cell.
C) Translate the codes in RNA
B) Transmit messages between cells.
D) Store information for building proteins.
29) The ultimate electron acceptor in aerobic respiration is
A) NADH
C) Oxygen
B) Carbon dioxide
D) ATP
30) Which of the following is not an organic molecule found in living organisms?
A) Protein
C) Carbohydrate
B) Nucleic acid
D) Sodium chloride
E) Lipid
31) The cell theory states that the cell is the most basic unit of life, all organisms are made of cells, and all cells come
from cells. What makes the cell theory a scientific theory?
A) It is based on a scientific publication that is read by scientists worldwide.
B) It is based on the work of many scientists and leads to accurate predictions.
C) It is based on ideas that have been proven true and that are not subject to revision.
D) It is based on preliminary evidence but still needs to be confirmed with experiments.
32) This graph shows that as the concentration of molecules
increases outside of a cell, more and more molecules
enter the cell. These molecules are able to enter the cell
because the
A) Molecules are polar.
B) Cytoplasm is warm
C) Cell membrane is semi permeable
D) Nucleus is regulating movement.
33) Which of the following is a function of the Golgi apparatus?
A) Storing genetic information
C) Providing a protective barrier
B) Recycling waste products of the cell
D) Processing and storing proteins.
34) A substance that moves across a cell membrane without using a cell’s energy tents to move
35)
36)
37)
38)
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A) Away from the area of equilibrium
C) Away from the area where it is more concentrated
B) Away from the area where it is less concentrated
D) Toward the area where it is more concentrated
The products of photosynthesis are
A) Sugars and oxygen
C) Water and carbon dioxide
B) Sugars and carbon dioxide
D) Hydrogen and oxygen
Cell membranes are constructed mainly of
A) Lipid bilayers
C) Carbohydrate gates
B) Protein pumps
D) Free-moving proteins
A group of students wants to find out how much carbon dioxide is used by plants during the daytime. What control
group could be used in this experiment?
A) The amount of water used during the daytime
C) The amount of carbon dioxide used at night
B) The amount of oxygen released at night
D) The amount of oxygen used during the daytime
Which of the following groups of organisms uses cellular respiration in mitochondria to produce ATP for their energy
needs?
A) Plants only
C) Animals only
B) Eukaryotes
D) Prokaryotes
Which of the following is an autotroph?
A) Impalas
C) Leopards
B) Plants
D) Mushrooms
The diagram represents the cellular processes of transcription and translation. What word best replaces X in the last
bubble?
A) Replication
B) protein
C) Glucose
D) molecule
41) Before the genetic code could be understood, scientists needed to know that a codon is composed of three
nucleotides. This situation is an example of the
A) fact that codons are the building blocks of life.
B) cumulative nature of scientific evidence.
C) way that theories can lead to scientific laws.
D) ability of scientists to make hypotheses.