Question 16

Question

Compared to aerobic respiration, anaerobic respiration

a
does not produce as much ATP and comes into action as an energy backup for aerobic organisms.
b
produces 38 ATP molecules per reaction and generates 70% more energy.
c
does not require oxygen and produces oxygen and glucose as forms of stored energy that are utilized by the cell.
d
requires oxygen and can produce products such as lactic acid or alcohol.
Question 17
Why is anaerobic respiration considered less efficient than aerobic respiration?

a
More oxygen is required for anaerobic respiration than for aerobic respiration.
b
More ATP molecules are gained in aerobic respiration than in anaerobic respiration.
c
Less energy is required during anaerobic respiration than aerobic respiration.
d
Less lactic acid is formed during anaerobic respiration than during aerobic respiration.
Question 18
Why is anaerobic respiration considered less efficient than aerobic respiration?

a
More oxygen is required for anaerobic respiration than for aerobic respiration.
b
More ATP molecules are gained in aerobic respiration than in anaerobic respiration.
c
Less lactic acid is formed during anaerobic respiration than during aerobic respiration.
d
Less energy is required during anaerobic respiration than aerobic respiration.
Question 19
Photosynthesis and cellular respiration both involve the use and release of gases. Which statement correctly identifies the role of gases in the two processes?

a
Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
b
Photosynthesis and cellular respiration both use carbon dioxide and release oxygen.
c
Photosynthesis and cellular respiration both use oxygen and release carbon dioxide.
d
Cellular respiration uses carbon dioxide and releases oxygen, while photosynthesis uses oxygen and releases carbon dioxide.
Question 20
Lucy sets up an investigation by placing a plastic bag over a plant. She secures the plastic bag so that it is completely sealed and nothing can enter. She observes the plant daily to see if it remains green and healthy.

Which TWO questions is her investigation designed to answer?

a
Can the plant perform photosynthesis faster than a plant that is not sealed?
b
Can the plant perform respiration without a large supply of oxygen?
c
Can the plant perform respiration without a large supply of carbon dioxide?
d
Can the plant perform photosynthesis without a large supply of carbon dioxide?
e
Can the plant perform respiration faster than a plant that is not sealed?
f
Can the plant perform photosynthesis without a large supply of oxygen?
Question 21
An important step in cellular respiration is

a
the breakdown of carbon dioxide.
b
the breakdown of glucose.
c
the creation of oxygen.
d
the creation of phosphate.
Question 22
The Krebs cycle produces electron carrier molecules. Where do these carrier molecules deliver the electrons produced in the Krebs cycle?

a
glycolysis
b
alcohol fermentation
c
the electron transport chain
d
lactic acid fermentation
Question 23
Look at the graph below.

Image

According to the graph, at which temperature do the two enzymes have about the same amount of activity?

a
25° C
b
47° C
c
57° C
d
93° C
Question 24
Use the diagram below to answer the question.

Image

The diagram shows a beaker of water and molecules of red dye at the beginning of an experiment (Time 1) and the same beaker of water and molecules of red dye after 30 minutes (Time 2). Which of the following best explains what happened?

a
Molecules of red dye moved by active transport from a higher concentration to a lower concentration.
b
Molecules of water moved by active transport from a higher concentration to a lower concentration.
c
Molecules of red dye moved by diffusion from a higher concentration to a lower concentration.
d
Molecules of water moved by osmosis from a lower concentration to a higher concentration.

Answer 1

Question 16: a) does not produce as much ATP and comes into action as an energy backup for aerobic organisms.
Question 17: b) More ATP molecules are gained in aerobic respiration than in anaerobic respiration.
Question 18: b) More ATP molecules are gained in aerobic respiration than in anaerobic respiration.
Question 19: a) Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.
Question 20: b) Can the plant perform respiration without a large supply of oxygen? and c) Can the plant perform respiration without a large supply of carbon dioxide?
Question 21: b) the breakdown of glucose.
Question 22: c) the electron transport chain.
Question 23: c) 57° C
Question 24: c) Molecules of red dye moved by diffusion from a higher concentration to a lower concentration.