PRINCIPLES OF BIOCHEMISTRY
2026/2027 || VERIFIED QUESTIONS
& ANSWERS || HIGH-YIELD
BIOCHEM REVIEW |
Exam
Biochemists study the communication within and around organisms. According to the module,
what are 2 other aspects of living organisms that biochemists study? 1. The relationship
between structure and function of biomolecules
2. Chemical reactions of organisms (metabolism)
3. Communication within and among organisms
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
2026/2027 || VERIFIED QUESTIONS
& ANSWERS || HIGH-YIELD
BIOCHEM REVIEW |
Exam
Biochemists study the communication within and around organisms. According to the module,
what are 2 other aspects of living organisms that biochemists study? 1. The relationship
between structure and function of biomolecules
2. Chemical reactions of organisms (metabolism)
3. Communication within and among organisms
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
