What role does NAD+ play in redox reactions? a. NAD+, an oxidizing agent, can accept electrons and protons from organic molecules and get reduced to NADH. b. NAD+, a reducing agent, can donate its electrons and protons to organic molecules. C. NAD+, an oxidizing agent, can accept electrons from organic molecules and get reduced to NADH2. d. NAD+, a reducing agent, can donate its electrons and protons to inorganic molecules.

What role does NAD+ play in redox reactions? a. NAD+, an oxidizing agent, can accept electrons and protons from organic molecules and get reduced to NADH. b. NAD+, a reducing agent, can donate its electrons and protons to organic molecules. C. NAD+, an oxidizing agent, can accept electrons from organic molecules and get reduced to NADH2. d. NAD+, a reducing agent, can donate its electrons and protons to inorganic molecules.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter5: Photosynthesis

Section: Chapter Questions

Problem 10RQ: Which statement correctly describes carbon fixation? a. the conversion of CO2 to an organic compound...

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If you took a well-watered corn plant and placed it in a dark atmosphere of helium and carbon dioxide, which process could occur? A. light-dependent reactions B. light-independent reactions C. citric acid cycle D. pyruvate oxidation
What is the difference between cellular respiration and fermentation? Select an answer. a) cellular respiration does not need oxygen, while fermentation needs oxygen b) cellular respiration needs oxygen, while fermentation does not need oxygen c) cellular respiration produces very little energy, while fermentation produces a lot of energy d) Almost all cells carry out fermentation, while few carry out cellular respiration
How are the NADPH and G3P molecules made during photosynthesis similar? a. They are both end products of photosynthesis. b. They are both substrates for photosynthesis. c. They are both produced from carbon dioxide. d. They both store energy in chemical bonds.
What is the role of NAD+ in the process of cellular respiration? a. It functions as an electron carrier. b. It functions as an enzyme. c. It is the final electron acceptor for anaerobic respiration. d. It is a nucleotide source for the synthesis of ATP.
Which process is most directly driven by light energy? A. ATP synthesis B. reduction of NADP+ molecules C. transfer of energy from pigment to pigment D. creation of a pH gradient by pumping protons
You are growing algae in culture and expose them to CO2 that contains radiolabeled oxygen. Where does the radiolabeled oxygen end up after photosynthesis? a. water b. oxygen c. carbon dioxide d. carbohydrates e. carbon monoxide
What is the energy of a photon first used to do in photosynthesis? a. split a water molecule b. energize an electron c. produce ATP d. synthesize glucose
From where does a heterotroph directly obtain its energy? a. the sun b. the sun and eating other organisms c. eating other organisms d. simple chemicals in the environment
What two products result from photosynthesis? a. water and carbon dioxide b. water and oxygen c. glucose and oxygen d. glucose and carbon dioxide
Which molecule absorbs the energy of a photon in photosynthesis? a. ATP b. glucose c. chlorophyll d. water
Conversion of NAD+ to NADH is accomplished by the addition of A. a proton. B. an electron. C. a hydride ion. D. a hydrogen atom.
The connection between producers and consumers is that only: A) heterotrophs can perform photosynthesis to produce energy for all life B) autotrophs can use sun energy to u to produce energy for all organisms C) producers use cellular respiration to produce energy for all life D) heterotrophs can perform cellular respiration producing oxygen for all organisms