bio quiz 6
Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the reactions of glycolysis?
100%
Starting with one molecule of glucose, glycolysis results in the net production of which of the following sets of energy-containing products?
2 NADH, 2 pyruvate, and 2 ATP
Which of the summary statements below describes the results of the following reaction?
C₆H₁₂O₆ is oxidized and O₂ is reduced.
Which kind of metabolic poison would most directly interfere with glycolysis?
An agent that closely mimics the structure of glucose but is not metabolized.
A cell has enough available ATP to meet its needs for about 30 seconds. What is likely to happen when an athlete exhausts his or her ATP supply?
Catabolic processes are activated that generate more ATP.
Which of the following statements describes what happens to a molecule that functions as the reducing agent (electron donor) in a redox or oxidation-reduction reaction?
It loses electrons and loses potential energy.
When a molecule of NAD+ (nicotinamide adenine dinucleotide) gains a hydrogen atom (not a proton), the molecule becomes ________.
Reduced.
What happens to a glucose molecule when it loses a hydrogen atom as the result of an oxidation-reduction reaction?
The glucose molecule is oxidized.
Why are carbohydrates and fats frequently considered high-energy foods?
They contain many electrons associated with hydrogen atoms.
In glycolysis, for each molecule of glucose oxidized to pyruvate, ________.
Two molecules of ATP are used, and four molecules of ATP are produced.