Bio 311C MM 4 QUESTIONS AND ANSWERS A+ GRADED
What are optimal conditions for Rubisco to fix CO2 but not O2?
an environment of moderate temperature and sunlight
What is a major difference between fermentation and anaerobic respiration?
Both begin with glycolysis, but anaerobic respiration c...
What are optimal conditions for Rubisco to fix CO2 but not O2?
an environment of moderate temperature and sunlight
What is a major difference between fermentation and anaerobic respiration?
Both begin with glycolysis, but anaerobic respiration continues with the citric acid cycle
and electron transport chain, whereas fermentation continues with a simple oxidation of
NADH.
What is the flow of electrons in oxidation and reduction, respectively?
reduction involves a gain of electrons, and oxidation involves a loss of electrons
What is/are the main drawback(s) of the Rubisco enzyme?
it's lack of specificity leads to it being able to react with or "fix" multiple substrates (O2
and CO2)
Why are the two subsections of glycolysis coined the energy "investment" and
"payoff" stages?
In the investment stage, 2 ATP is being spent, or "invested" in order to phosphorylate
certain compounds, but in the payoff stage, 4 ATP is produced as a result of substrate
level phosphorylation.
In a redox reaction, the reactant that accepts an electron is ___. Check all that
apply.
- the oxidizing agent
- reduced
- oxidized
- the reducing agent
Which of the following describe photorespiration and/or consequences of
photorespiration? Choose all that apply.
- Photorespiration causes carbon to be lost from the Calvin Cycle
- Photorespiration increases photosynthetic output
- Photorespiration hinders the ability of plants to fix CO2
- Photorespiration causes plants to die almost immediately
- Like cellular respiration, photorespiration leads to ATP synthesis
- Photorespiration causes carbon to be lost from the Calvin Cycle
photosynthetic output
- Photorespiration hinders the ability of plants to fix CO2
In cellular respiration, the energy of the glucose molecule is transferred to other
molecules in a series of steps. Which molecule(s) directly gain(s) this energy
during the step-wise hydrolysis of glucose?
electron carriers NAD+ and FAD
How is the formation of ATP coupled to the electron transport chain (ETC)?
Energy that is released as electrons are passed to each complex in the ETC is used to
pump H+ into the intermembrane space; subsequent exergonic diffusion of H+ through
ATP synthase facilitates the endergonic phosphorylation of ADP.
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