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Chapter 6 and 7 (Mastering Biology) Questions and Answers 2024
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Chapter 6 and 7 (Mastering Biology)
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Chapter 6 and 7 (Mastering Biology)Which of the following statements regarding photosynthesis and cellular respiration is
true?
a. Photosynthesis occurs in mitochondria and in chloroplasts.
b. Photosynthesis occurs in chloroplasts, and cellular respiration occurs in mitochondria.
c. Cellular respiration occurs in mitochondria and in chloroplasts.
d. Photosynthesis occurs in mitochondria, and cellular respiration occurs in chloroplasts.
- answerb. Photosynthesis occurs in chloroplasts, and cellular respiration occurs in
mitochondria.
How do cells capture the energy released by cellular respiration?
a. They produce glucose.
b. They store it in molecules of carbon dioxide.
c. They produce ATP.
d. The energy is coupled to oxygen. - answerc. They produce ATP.
The processes of photosynthesis and cellular respiration are complementary. During
these energy conversions, some energy is
a. lost in the form of heat.
b. used to create light.
c. saved in the chemical bonds of water, CO2 and O2.
d. destroyed when the chemical bonds of glucose are made. - answera. lost in the form
of heat.
Respiration ________, and cellular respiration ________.
a. is gas exchange . . . produces ATP
b. produces glucose . . . produces oxygen
c. produces ATP . . . is gas exchange
d. uses glucose . . . produces glucose - answera. is gas exchange . . . produces ATP
Which of the following are products of cellular respiration?
a. oxygen and glucose
b. oxygen and energy to make ATP
c. oxygen and carbon dioxide
d. energy to make ATP and carbon dioxide - answerd. energy to make ATP and carbon
dioxide
Which of the following statements regarding cellular respiration is false?
a. Cellular respiration is a single chemical reaction with just one step.
b. Cellular respiration produces water.
c. Cellular respiration produces carbon dioxide.
, d. Cellular respiration releases heat. - answera. Cellular respiration is a single chemical
reaction with just one step.
The overall equation for the cellular respiration of glucose is
a. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + energy.
b. C5H12O6 + 6 O2 → 5 CO2 + 6 H2O + energy.
c. C6H12O6 + energy → 6 CO2+ 6 H2O + 6 O2.
d. 5 CO2 + 6 H2O → C5H12O6 + 6 O2 + energy. - answera. C6H12O6 + 6 O2 → 6
CO2 + 6 H2O + energy.
Which of the following statements about the energy yields from cellular respiration is
true?
a. Cellular respiration is more efficient at harnessing energy from glucose than car
engines are at harnessing energy from gasoline.
b. Cellular respiration converts all of the energy in glucose into high-energy ATP bonds.
c. Cellular respiration converts the kinetic energy of glucose into chemical energy.
d. The heat produced during cellular respiration is only a tiny fraction of the chemical
energy available in a glucose molecule. - answera. Cellular respiration is more efficient
at harnessing energy from glucose than car engines are at harnessing energy from
gasoline.
Humans use the calories they obtain from ________ as their source of energy.
a. sunlight
b. food
c. minerals
d. water - answerb. food
Humans use about ________ of their daily calories to maintain brain cells and power
other life-sustaining activities.
a. 90%
b. 50%
c. 75%
d. 25% - answerc. 75%
A kilocalorie is defined as
a. the quantity of food used to maintain normal bodily functions.
b. the quantity of food consumed during a given type of exercise.
c. the quantity of glucose needed to increase the body temperature by 1°C.
d. the quantity of heat needed to raise the temperature of 1 kg of water by 1°C. -
answerd. the quantity of heat needed to raise the temperature of 1 kg of water by 1°C.
During cellular respiration, the energy in glucose
a. is released all at once.
b. is carried by electrons.
c. becomes stored in molecules of ammonia.
d. is used to manufacture glucose. - answerb. is carried by electrons.
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