AnswersFirst Semester BiologyPhotosynthesis and Cellular Respiration

Photosynthesis and Cellular Respiration — Unit test Answers

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1
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Which statement correctly describes what proteins, lipids, and glycogen have in common?

A
They are all used as primary energy sources during exercise.
B
They are each stored in the liver to be used as a ready energy reserve.
C
They each can be broken down to provide ATP to cells.
D
They each contain the same amount of ATP.
2
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Which term is correctly paired with its role in the body?

A
insulin – a sugar that regulates blood glycogen levels
B
ADP – a molecule that releases energy when it forms ATP
C
glycogen – a hormone found in blood that regulates blood glucose levels
D
glucose – a sugar found in blood that can be broken down to produce ATP
3

Which of the following is an inference?

A
A burning candle is extinguished when it is covered with a jar.
B
The candle burns longer than expected in a jar that has a plant in it.
C
A plant lives longer than expected in a jar that has a burning candle.
D
There is more oxygen in the jar because there is a plant in it.
4

A lab experiment to determine the rate of ATP production and its use in plants is conducted. In the lab, twenty circles cut from plant leaves are placed in a container of water with a light source, which allows photosynthesis to occur. When the rate of ATP production exceeds the ATP use, oxygen is given off by the plant cells, causing the leaf circles to float. Using the graph of data from this experiment, at which point was the light source most likely removed?

Question illustration
A
A
B
B
C
C
D
D
5

What prohibits lipids from being a readily available energy source?

A
Fat must be broken down into fatty acids before being converted to glucose.
B
Lipids are structural components, so they are a last-resort energy source.
C
Lipids are only used to create enzymes, hormones, and antibodies.
D
The conversion of fat to glucose is controlled by insulin.
6

What is carbon fixation, and how does it relate to photosynthesis?

A
It is the absorption of CO2 from the air, and it occurs during the light-dependent reactions.
B
It is the reduction of CO2, and it occurs during the Calvin cycle.
C
It is the conversion of CO2 into organic compounds, and it forms 3-PGA.
D
It is the production of CO2 during regeneration, and it forms RuBP.
7

Which statement correctly explains whether more ATP is found in muscle cells or bone cells?

A
More ATP is found in muscle cells because they use energy less efficiently than bone cells.
B
More ATP is found in bone cells because they grow more and need energy from ATP.
C
More ATP is found in bone cells because they need large amounts of energy to produce marrow.
D
More ATP is found in muscle cells because they need large amounts of energy to power motion.
8

In algae and plants, photosynthesis happens in the

A
vacuoles.
B
mitochondria.
C
chloroplasts.
D
chromosomes.

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