CHEM 210 BIOCHEMIISTRY FINAL EXAM -PORTAGE LEARNING |
QUESTIONS AND VERIFIED ANSWERS | GRADED A+ | PASS FIRST ATTEMPT
| NEW 2026 UPDATED
T/F: Hydrogen is called the superglue of the chemical world. - false
carbon = superglue of the world
T/F: Small elements, such as nitrogen, are common in biomolecules. - true
Small elements that are common in biomolecules: - CHOPS N:
- carbon
- hydrogen
- oxygen
- phosphorous
- sulfur
- nitrogen
T/F: The time it takes for a compound to flow through a metabolic pathway is called the
flux. - true
T/F: Proteins, carbohydrates, and fats all get broken down into NADH and FADH2 in energy
production. - true
T/F: A fat is a lipid molecules that is a liquid at room temperature. - false
In RNA, guanine always pairs with: - cytosine
,In RNA, adenine always pairs with: - uracil
In DNA, adenine always pairs with: - thymine
Water is considered a polar solvent due to attractive forces known as hydrogen bonds. A
hydrogen bond is: - an attractive force between molecules where partially positive
hydrogen atoms are attracted to partially negative atoms of F, O, or N
What is a London force? - a temporary attraction between atoms due to electron
alignment
What is a dipole-dipole force? - an attraction between the positive end of one polar
molecule and the negative end of another
What attributes contribute to water's unusual properties? - 1. geometry of the molecule
2. polarity of the -OH bonds
3. ability of water molecules to hydrogen bond
4. body angle of water molecules to H bond
The H+ concentration of a solution is 7.9 x 10^-13 M. What is the pH? - 12.1
pH = -log(7.9 x 10^-13)
What represents the free-energy change of a reaction? - ΔG = Gibbs free energy
What is the measure of heat content in a reaction? - ΔH = enthalpy
, What is the measure of order of the system in a reaction? - ΔS = entropy
A fibrous protein is an example of a protein ___. - conformation
What is an example of protein conformation? - fibrous and globular
Any molecule or ion that is necessary for an enzyme's function is called: - cofactor
In a particular cell, molecules X binds to an enzyme causing to stop catalyzing reactions.
Molecule X is called what? - inhibitor
What is the function of lipids in cells? - 1. energy source/storage
2. structural role in membranes (myelin sheaths)
3. vitamins
4. basis for dye molecules (carotenoids)
What is the function of carbohydrates in cells? - 1. structural role in DNA and RNA
2. intermediate in metabolism
3. energy source for cells
In a particular cell, molecule X binds near the active site on an enzyme causing it to slow
catalyzing reactions. Molecules X is called what? - uncompetitive inhibitor
In a particular cell, molecule X binds to an enzyme at the active site causing it to stop
catalyzing reactions. Molecules X is called what? - competitive inhibitor
QUESTIONS AND VERIFIED ANSWERS | GRADED A+ | PASS FIRST ATTEMPT
| NEW 2026 UPDATED
T/F: Hydrogen is called the superglue of the chemical world. - false
carbon = superglue of the world
T/F: Small elements, such as nitrogen, are common in biomolecules. - true
Small elements that are common in biomolecules: - CHOPS N:
- carbon
- hydrogen
- oxygen
- phosphorous
- sulfur
- nitrogen
T/F: The time it takes for a compound to flow through a metabolic pathway is called the
flux. - true
T/F: Proteins, carbohydrates, and fats all get broken down into NADH and FADH2 in energy
production. - true
T/F: A fat is a lipid molecules that is a liquid at room temperature. - false
In RNA, guanine always pairs with: - cytosine
,In RNA, adenine always pairs with: - uracil
In DNA, adenine always pairs with: - thymine
Water is considered a polar solvent due to attractive forces known as hydrogen bonds. A
hydrogen bond is: - an attractive force between molecules where partially positive
hydrogen atoms are attracted to partially negative atoms of F, O, or N
What is a London force? - a temporary attraction between atoms due to electron
alignment
What is a dipole-dipole force? - an attraction between the positive end of one polar
molecule and the negative end of another
What attributes contribute to water's unusual properties? - 1. geometry of the molecule
2. polarity of the -OH bonds
3. ability of water molecules to hydrogen bond
4. body angle of water molecules to H bond
The H+ concentration of a solution is 7.9 x 10^-13 M. What is the pH? - 12.1
pH = -log(7.9 x 10^-13)
What represents the free-energy change of a reaction? - ΔG = Gibbs free energy
What is the measure of heat content in a reaction? - ΔH = enthalpy
, What is the measure of order of the system in a reaction? - ΔS = entropy
A fibrous protein is an example of a protein ___. - conformation
What is an example of protein conformation? - fibrous and globular
Any molecule or ion that is necessary for an enzyme's function is called: - cofactor
In a particular cell, molecules X binds to an enzyme causing to stop catalyzing reactions.
Molecule X is called what? - inhibitor
What is the function of lipids in cells? - 1. energy source/storage
2. structural role in membranes (myelin sheaths)
3. vitamins
4. basis for dye molecules (carotenoids)
What is the function of carbohydrates in cells? - 1. structural role in DNA and RNA
2. intermediate in metabolism
3. energy source for cells
In a particular cell, molecule X binds near the active site on an enzyme causing it to slow
catalyzing reactions. Molecules X is called what? - uncompetitive inhibitor
In a particular cell, molecule X binds to an enzyme at the active site causing it to stop
catalyzing reactions. Molecules X is called what? - competitive inhibitor
