AnswersPA Human Anatomy Physiology A 2026-2027 SMITH ICEnergy in Cells

Energy in Cells — Unit test Answers

0 verified answers
1
Free Preview

Which is the final electron acceptor in the electron transport chain of cellular respiration?

A
NADH
B
FADH2
C
oxygen
D
carbon dioxide
2
Free Preview

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
3

How does adenosine triphosphate (ATP) become adenosine diphosphate (ADP)?

A
ATP stores energy as a phosphate bond is formed.
B
ATP releases energy as a phosphate bond is formed.
C
ATP releases energy as a phosphate bond is broken.
D
ATP stores energy as a phosphate bond is broken.
4

The Venn diagram compares aerobic respiration and anaerobic respiration.Which statement could be categorized in the overlapping section of the Venn diagram?

Question illustration
A
uses pyruvic acid
B
has commercial uses
C
regenerates NADH
D
produces 36 ATP
5

What do all cellular activities in living organisms use as a source of energy?

A
ATP
B
lactic acid
C
pyruvic acid
D
carbon dioxide
6

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.
7

How does ATP supply energy for cellular activities?

A
by breaking off a phosphate group from its structure
B
by releasing the sugar molecule from its structure
C
by adding a phosphate group to its structure
D
by attaching itself to a glucose molecule
8

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.
9

Which of the following can combine in a cell to convert a lower-energy molecule into a higher-energy molecule?

A
ADP + P + energy
B
ATP + P + energy
C
ADP + P
D
ATP + P
10

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.
11

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

Did you find these answers helpful?

More from this Course

Quiz
17 verified answers

Unit Test

Quiz
16 verified answers

Unit Test

Quiz
15 verified answers

Unit Test