West Los Angeles College » Chemistry » Chem 221 - Biochemistry for Science Majors » Fall 2021

Which of the following is true about oxidation-reduction reactions?

Biological oxidation-reduction reactions always involve:

Which of the following is the ultimate electron acceptor in aerobic organisms?

What compound serves as an acyl carrier in metabolism?

Which of the following is a 2-electron oxidizing agent used in catabolic pathways?

Which of the following is a mechanism by which enzyme catalytic activity is controlled?

The reduced form of flavin adenine dinucleotide is

C3+ is more oxidized than C2-

For the pair of ions below, indicate which is the more highly reduced species. Co2+/Co+

For the pair of compounds below, indicate which is the more highly reduced species. Glucose/CO2

For the pair of compounds below, indicate which is the more highly reduced species. Acetate/CO2

For the pair compounds below, indicate which is the more highly reduced species. Acetic acid/acetaldehyde

Electrons are at a lower energy level when they are associated with less electronegative atoms (such as C) and at a higher energy level when they are associated with a more electronegative atom (such as O).

In cellular respiration, electrons from glucose move towards oxygen, passing to lower and lower energy states and releasing energy at each step.

The most reduced form of carbon is CH4, the most oxidized is CO2

C+ is more oxidized than C4-

The most oxidized form of carbon has -4 charge

The more reduced the compound, the richer in oxygen than in hydrogen.

During cellular respiration, the C atoms of glucose increase their oxidation state.

When a molecule accepts electrons it become reduced

Carbon is more electronegative than hydrogen

What is the oxidation state of the carbonyl carbon is acetone?

What is the oxidation state of C#2 is glycerol?

The oxidation state of carbon in methane is

The oxidation state of carbon in ethene is

Ethene is more oxidized than ethane.

Increase in oxidation state means oxidation.

The more oxidized a carbon is to begin with, the more free energy is released upon oxidation.

Oxidized organic compounds serve as fuels from which electrons can be stripped off during oxidation.

Lipids are a more efficient food source than glucose because lipids are more reduced than glucose.

NAD+ and FAD are water-soluble coenzymes

NAD+ and FAD are water-soluble cofactors

NAD+ is usually very tightly bound to the enzymes, for which they serve as prosthetic group.

FAD move readily from one enzyme to another.

NAD+ accepts a hydrogen ion and two electrons, which are equivalent to a hydride ion.

A hydride ion has two protons and two electrons.

A hydride ion has two protons and one electron.

A hydride ion has one proton and one electron.

A hydride ion has one proton and two electrons.

Proteases are hydrolytic enzymes.

Proteases catalyze synthesis reactions

Kinases cleave phosphoryl groups

Dehydrogenations involve the presence of electron carriers.

Isomerization reactions involve an intramolecular rearrangement in which redistribution of electrons result in alterations of my different types without a change in the overall oxidation state of the molecule.

Chem 221 - Biochemistry for Science Majors » Fall 2021 » L16 Bioenergetics Part 2 of 2

Need help with your exam preparation?

Need help with your exam preparation?