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51
In glycolysis, what starts the process of glucose oxidation?
A:
ADP
B:
FADH₂
C:
Hexokinase
D:
NADPH
52
Which of these is NOT a product of glycolysis?
A:
NADH
B:
FADH₂
C:
Pyruvate
D:
ATP
53
In glycolysis, ATP molecules are produced by
A:
Substrate-level phosphorylation
B:
Photosynthesis
C:
Cellular respiration
D:
Photophosphorylation
54
How many NADH are produced by glycolysis?
A:
3
B:
2
C:
4
D:
5
55
Which of the following describes the process of glycolysis?
A:
Converts glucose to pyruvate and CO₂
B:
First stage of glucose oxidation
C:
Occurs in mitochondria
D:
Produces 30 ATP, NADH
56
Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration?
A:
Molecules in chemical bonds that cells can use for work
B:
Producing complex molecules from chemical building blocks
C:
The breakdown of glucose to carbon dioxide and water
D:
Breaking down ATP, so that ADP and P can be reused
57
Gaseous hydrogen burns in the presence of oxygen to form water: 2H₂ + O₂ → 2H₂O + energy
A:
Hydrogen, polar
B:
Oxygen, polar
C:
Oxygen, nonpolar
D:
Hydrogen, nonpolar
58
What kind of bond is formed when lithium and fluorine combine to form lithium fluoride?
A:
Nonpolar covalent
B:
Redox
C:
Polar covalent
D:
Ionic
59
Which of the following statements is not true of most cellular redox reactions?
A:
Changes in potential energy can be released as heat.
B:
The reactant that is oxidized loses electrons.
C:
A hydrogen atom is transferred to the atom that loses an electron.
D:
The electron acceptor is reduced
60
Which of the following statements is true of the bonds in a water molecule?
A:
Oxygen acts as the electron acceptor and is oxidized.
B:
Oxygen holds electrons more tightly, net charge is zero
C:
Electron in each hydrogen transferred, net +1 charge
D:
Equal sharing of electrons, net charge zero
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