Biochemistry 10th Edition By Jeremy Berg, Gregory
Gatto, Justin Hines, John Tymoczko, Lubert Stryer
ALL CHAPTERS EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS 2025
Chapter 1: Introduction to Biochemistry
1. Which of the following is a characteristic of all living organisms?
a. Ability to photosynthesize
b. Presence of a nucleus
c. Ability to reproduce
d. Presence of chlorophyll
Answer: c. Ability to reproduce
Rationale: All living organisms have the ability to reproduce, ensuring the
continuation of their species. While many organisms can photosynthesize, not
all do. Similarly, not all organisms have a nucleus or chlorophyll.
,2. Which of the following elements is most abundant in the human body?
a. Carbon
b. Oxygen
c. Nitrogen
d. Hydrogen
Answer: b. Oxygen
Rationale: Oxygen makes up about 65% of the human body's mass, primarily
due to water content. Carbon is the second most abundant element, followed by
hydrogen and nitrogen.
3. Which of the following bonds is formed by the sharing of electrons between
atoms?
a. Ionic bond
b. Covalent bond
c. Hydrogen bond
d. Van der Waals interaction
Answer: b. Covalent bond
Rationale: Covalent bonds involve the sharing of electron pairs between atoms,
leading to the formation of molecules. Ionic bonds involve the transfer of
electrons, hydrogen bonds are attractions between polar molecules, and Van
der Waals interactions are weak attractions between molecules.
4. What is the primary structure of a protein?
,a. The sequence of amino acids
b. The three-dimensional shape of the protein
c. The arrangement of subunits in a multi-subunit complex
d. The folding pattern of the protein
Answer: a. The sequence of amino acids
Rationale: The primary structure of a protein refers to the linear sequence of
amino acids in a polypeptide chain, which dictates the protein's higher-level
structures and functions.
5. Which of the following is a function of carbohydrates in living organisms?
a. Catalyzing biochemical reactions
b. Providing structural support
c. Storing genetic information
d. Serving as a primary energy source
Answer: d. Serving as a primary energy source
Rationale: Carbohydrates are a primary energy source for cells. They can also
provide structural support (e.g., cellulose in plants), but they do not catalyze
reactions or store genetic information.
Chapter 2: Water and the Fitness of the Environment
6. Why is water considered a polar molecule?
a. It has a symmetrical distribution of charge
b. It has an unequal distribution of charge
, c. It forms hydrogen bonds
d. It is a good solvent
Answer: b. It has an unequal distribution of charge
Rationale: Water is polar because the oxygen atom is more electronegative than
hydrogen, leading to an unequal distribution of charge, with a partial negative
charge on oxygen and partial positive charges on hydrogen.
7. Which of the following is a property of water that is important for life?
a. High boiling point
b. Low specific heat capacity
c. High surface tension
d. Low heat of vaporization
Answer: c. High surface tension
Rationale: Water's high surface tension allows it to form droplets and enables
capillary action, which is vital for processes like water transport in plants.
8. What is the pH of a neutral solution at 25°C?
a. 0
b. 7
c. 14
d. 1
Answer: b. 7
Gatto, Justin Hines, John Tymoczko, Lubert Stryer
ALL CHAPTERS EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS 2025
Chapter 1: Introduction to Biochemistry
1. Which of the following is a characteristic of all living organisms?
a. Ability to photosynthesize
b. Presence of a nucleus
c. Ability to reproduce
d. Presence of chlorophyll
Answer: c. Ability to reproduce
Rationale: All living organisms have the ability to reproduce, ensuring the
continuation of their species. While many organisms can photosynthesize, not
all do. Similarly, not all organisms have a nucleus or chlorophyll.
,2. Which of the following elements is most abundant in the human body?
a. Carbon
b. Oxygen
c. Nitrogen
d. Hydrogen
Answer: b. Oxygen
Rationale: Oxygen makes up about 65% of the human body's mass, primarily
due to water content. Carbon is the second most abundant element, followed by
hydrogen and nitrogen.
3. Which of the following bonds is formed by the sharing of electrons between
atoms?
a. Ionic bond
b. Covalent bond
c. Hydrogen bond
d. Van der Waals interaction
Answer: b. Covalent bond
Rationale: Covalent bonds involve the sharing of electron pairs between atoms,
leading to the formation of molecules. Ionic bonds involve the transfer of
electrons, hydrogen bonds are attractions between polar molecules, and Van
der Waals interactions are weak attractions between molecules.
4. What is the primary structure of a protein?
,a. The sequence of amino acids
b. The three-dimensional shape of the protein
c. The arrangement of subunits in a multi-subunit complex
d. The folding pattern of the protein
Answer: a. The sequence of amino acids
Rationale: The primary structure of a protein refers to the linear sequence of
amino acids in a polypeptide chain, which dictates the protein's higher-level
structures and functions.
5. Which of the following is a function of carbohydrates in living organisms?
a. Catalyzing biochemical reactions
b. Providing structural support
c. Storing genetic information
d. Serving as a primary energy source
Answer: d. Serving as a primary energy source
Rationale: Carbohydrates are a primary energy source for cells. They can also
provide structural support (e.g., cellulose in plants), but they do not catalyze
reactions or store genetic information.
Chapter 2: Water and the Fitness of the Environment
6. Why is water considered a polar molecule?
a. It has a symmetrical distribution of charge
b. It has an unequal distribution of charge
, c. It forms hydrogen bonds
d. It is a good solvent
Answer: b. It has an unequal distribution of charge
Rationale: Water is polar because the oxygen atom is more electronegative than
hydrogen, leading to an unequal distribution of charge, with a partial negative
charge on oxygen and partial positive charges on hydrogen.
7. Which of the following is a property of water that is important for life?
a. High boiling point
b. Low specific heat capacity
c. High surface tension
d. Low heat of vaporization
Answer: c. High surface tension
Rationale: Water's high surface tension allows it to form droplets and enables
capillary action, which is vital for processes like water transport in plants.
8. What is the pH of a neutral solution at 25°C?
a. 0
b. 7
c. 14
d. 1
Answer: b. 7
