Question 1

Biologists believe that Earth's early life-forms were exposed to an atmosphere with no molecular oxygen and had not yet evolved the Krebs cycle. If so, alcoholic fermentation would have been particularly critical to life because without the pathway

Accepted Answer

A)  ethanol would not be available as a nutrient for other consumers.
B)  lactic acid would accumulate and disable prokaryotic muscle cells.
C)  carbon could not be recycled back into the biosphere for use by producers.
D)  the only source of NADH for electron transport would be from glycolysis and ATP production would be greatly reduced.E) B) and C)
F) A) and D)

Question 2

What best summarizes the events of the Calvin cycle?

Accepted Answer

A)  The cycle uses ATP and NADPH to produce sugars.
B)  The cycle moves electrons from Photosystem II to Photosystem I.
C)  The cycle moves light-energized electrons to Photosystem II.
D)  The cycle absorbs light from the light reactions.E) B) and C)
F) A) and D)

Question 3

As an energy carrier, ATP differs from NADPH in that

Accepted Answer

A)  ATP carries less energy than NADPH.
B)  ATP transfers energy through redox reactions, whereas NADPH uses phosphorylation.
C)  NADPH is involved in a larger variety of chemical reactions than ATP.
D)  NADPH is made by Photosystem I, whereas ATP is made by Photosystem II.E) A) and D)
F) All of the above

Question 4

Light consists of massless particles called photons, each of which propagates through space with a wavelike oscillation; the ____________________ the wavelength the greater the energy content.

Accepted Answer

The answer of Light consists of massless particles called photons,...

Exam 9: Photosynthesis and Cellular Respiration

What best summarizes the events of the Calvin cycle?

Correct Answer
verified

Light consists of massless particles called photons, each of which propagates through space with a wavelike oscillation; the ____________________ the wavelength the greater the energy content.

Correct Answer
verified

Biologists believe that Earth's early life-forms were exposed to an atmosphere with no molecular oxygen and had not yet evolved the Krebs cycle. If so, alcoholic fermentation would have been particularly critical to life because without the pathway

Correct Answer
verified

As an energy carrier, ATP differs from NADPH in that

Correct Answer
verified

Exam 9: Photosynthesis and Cellular Respiration

What best summarizes the events of the Calvin cycle?

Correct AnswerverifiedShow Answer

Light consists of massless particles called photons, each of which propagates through space with a wavelike oscillation; the ____________________ the wavelength the greater the energy content.

Correct AnswerverifiedShow Answer

Biologists believe that Earth's early life-forms were exposed to an atmosphere with no molecular oxygen and had not yet evolved the Krebs cycle. If so, alcoholic fermentation would have been particularly critical to life because without the pathway

Correct AnswerverifiedShow Answer

As an energy carrier, ATP differs from NADPH in that

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified