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Cellular Reproduction and Energy — Test Answers

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1
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Which option would allow Stella to set up a control group for the experiment?

A
She should give the plants receiving the least cap c cap o sub 2 a little more oxygen to compensate for the difference in gases.
B
She should give all the flowers the same amount of water.
C
She should place one flower in a similar container, but not pump carbon dioxide into it.
D
She should provide mist to each of the plants except one plant to keep the air moist and fertilize the plants.
2
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What is the step that is labeled D?

A
telophase II
B
telophase I
C
metaphase I
D
metaphase II
3

Which does the letter A represent in the diagram?

A
spindle
B
chromosome
C
centromere
D
centriole
4

Which is required for the light-dependent reactions in photosynthesis to occur?

A
ATP
B
NADPH
C
CO sub 2
D
HO sub 2
5

Which statement best distinguishes an observation from an inference?

A
An observation involves assumptions, but an inference does not.
B
An observation is likely to change based on additional inferences.
C
An inference involves the senses, but an observation does not.
D
An inference is likely to change based on additional observations.
6

How does interphase prepare cells for mitosis?

A
growth of cell and replication of DNA
B
division of cytoplasm
C
dissolution of nucleus and cell membrane
D
rest prior to cell division
7

Which statement is factual?

A
Asexual reproduction produces offspring that are identical to the parent.
B
Sexual reproduction does not require the production of gametes.
C
Asexual reproduction leads to the formation of haploid gametes.
D
Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
8

It is crucial that the process of mitosis is error free. This is because otherwise healthy cells can

A
become cancer cells.
B
produce two identical cells.
C
undergo meiosis.
D
grow into giant super cells.
9

Which correctly describes crossing over?

A
the process whereby homologous chromosomes are pulled to opposite poles of the cell
B
the process whereby homologous chromosome pairs align randomly along the metaphase plate
C
the process whereby non-sister chromatids exchange genetic material
D
the process whereby sister chromatids are pulled to opposite poles of the cell
10

Which process connects glycolysis and the citric acid cycle?

A
electron transport
B
Krebs cycle
C
acetyl CoA formation
D
lactic acid formation
11

Which process is similar to binary fission?

A
meiosis
B
genetic variation
C
crossing over
D
mitosis
12

Which specific process in the light-dependent reactions produces oxygen and hydrogen ions?

A
the production of ATP
B
the splitting of water
C
the excitation of electrons in photosytem I
D
the formation of NADPH
13

After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body?

A
Strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.
B
Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.
C
Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs. This is a result of aerobic respiration.
D
Heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. Lactate is being transported to her liver. This is a result of aerobic respiration.
14

How has the study of mitosis affected scientists’ knowledge of cancer?

A
It led to an understanding of how cancer cells divide so rapidly.
B
It led to the discovery of how to prevent cancer cells from dividing.
C
It led to a study of how to induce cancer cells to divide more rapidly.
D
It led to the development of contact-inhibition regulators.
15

In what way are the light-dependent and light-independent reactions of photosynthesis similar?

A
Both occur in the chloroplast.
B
Both produce oxygen as a byproduct.
C
Both require chemical energy to proceed.
D
Both involve carbon fixation.
16

Which events take place in the light-dependent reactions of photosynthesis?

A
Light energy is captured by plants; light energy is converted to chemical energy.
B
Light energy is captured by plants; light energy is used to make sugar.
C
Light energy is converted to sugars; sugars are broken down for energy.
D
Light energy is converted to chemical energy; chemical energy is used to make sugar.
17

To which substance does ferredoxin transfer an electron?

A
NADPH
B
photosystem I
C
NADP +
D
photosystem II
18

Which speeds up the reaction between carbon dioxide and RuBP to restart the Calvin Cycle?

A
glyceraldehyde 3-phosphate
B
light energy
C
3-phosphoglycerate
D
rubisco
19

Meiosis occurs in a series of different phases and creates genetically unique reproductive cells. Which process helps make meiotic cells genetically different and occurs during prophase I, but not during prophase II?

A
independent assortment
B
chromosome replication
C
fertilization
D
crossing over
20

Which best describes the processes of mitosis and meiosis?

A
Cells in mitosis go through the PMAT stages once to produce diploid cells while cells in meiosis go through PMAT stages twice to produce haploid cells.
B
Cells in mitosis and meiosis go through the PMAT stages once to produce diploid cells.
C
Cells in mitosis and meiosis go through the PMAT stages twice to produce haploid cells.
D
Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.

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