BIOS 150 Midterm Exam 3 (Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. What is the primary function of carbohydrates in the body?
A. Build muscles
B. Store genetic information
C. Provide energy
D. Regulate hormones
Correct Answer: C. Provide energy
Rationale: Carbohydrates are the body's main immediate energy
source.
2. Which macromolecule is composed of amino acids?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids
Correct Answer: B. Proteins
Rationale: Proteins are built from amino acid chains.
,3. What is the basic unit of lipids?
A. Monosaccharide
B. Fatty acids and glycerol
C. Nucleotide
D. Amino acid
Correct Answer: B. Fatty acids and glycerol
Rationale: Lipids consist of fatty acids attached to glycerol.
4. Which molecule carries genetic information?
A. Protein
B. Lipid
C. DNA
D. Glucose
Correct Answer: C. DNA
Rationale: DNA stores hereditary information.
5. What type of bond links amino acids?
A. Hydrogen bond
B. Ionic bond
C. Peptide bond
D. Covalent bond
Correct Answer: C. Peptide bond
Rationale: Peptide bonds join amino acids in proteins.
,6. What is an enzyme?
A. Hormone
B. Catalyst
C. Lipid
D. Carbohydrate
Correct Answer: B. Catalyst
Rationale: Enzymes speed up biochemical reactions.
7. What is the substrate in an enzyme reaction?
A. Product
B. Reactant
C. Enzyme
D. Cofactor
Correct Answer: B. Reactant
Rationale: Substrate is the molecule the enzyme acts upon.
8. What affects enzyme activity?
A. Temperature
B. pH
C. Concentration
D. All of the above
Correct Answer: D. All of the above
Rationale: All these factors influence enzyme function.
, 9. What is denaturation?
A. Enzyme activation
B. Loss of structure
C. Increased activity
D. DNA replication
Correct Answer: B. Loss of structure
Rationale: Denatured proteins lose function.
10. What is metabolism?
A. Energy storage
B. Chemical reactions in cells
C. Cell division
D. Digestion
Correct Answer: B. Chemical reactions in cells
Rationale: Includes all biochemical processes.
11. What is ATP?
A. Enzyme
B. Energy molecule
C. Protein
D. Hormone
Correct Answer: B. Energy molecule
Rationale: ATP stores and transfers energy.
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. What is the primary function of carbohydrates in the body?
A. Build muscles
B. Store genetic information
C. Provide energy
D. Regulate hormones
Correct Answer: C. Provide energy
Rationale: Carbohydrates are the body's main immediate energy
source.
2. Which macromolecule is composed of amino acids?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids
Correct Answer: B. Proteins
Rationale: Proteins are built from amino acid chains.
,3. What is the basic unit of lipids?
A. Monosaccharide
B. Fatty acids and glycerol
C. Nucleotide
D. Amino acid
Correct Answer: B. Fatty acids and glycerol
Rationale: Lipids consist of fatty acids attached to glycerol.
4. Which molecule carries genetic information?
A. Protein
B. Lipid
C. DNA
D. Glucose
Correct Answer: C. DNA
Rationale: DNA stores hereditary information.
5. What type of bond links amino acids?
A. Hydrogen bond
B. Ionic bond
C. Peptide bond
D. Covalent bond
Correct Answer: C. Peptide bond
Rationale: Peptide bonds join amino acids in proteins.
,6. What is an enzyme?
A. Hormone
B. Catalyst
C. Lipid
D. Carbohydrate
Correct Answer: B. Catalyst
Rationale: Enzymes speed up biochemical reactions.
7. What is the substrate in an enzyme reaction?
A. Product
B. Reactant
C. Enzyme
D. Cofactor
Correct Answer: B. Reactant
Rationale: Substrate is the molecule the enzyme acts upon.
8. What affects enzyme activity?
A. Temperature
B. pH
C. Concentration
D. All of the above
Correct Answer: D. All of the above
Rationale: All these factors influence enzyme function.
, 9. What is denaturation?
A. Enzyme activation
B. Loss of structure
C. Increased activity
D. DNA replication
Correct Answer: B. Loss of structure
Rationale: Denatured proteins lose function.
10. What is metabolism?
A. Energy storage
B. Chemical reactions in cells
C. Cell division
D. Digestion
Correct Answer: B. Chemical reactions in cells
Rationale: Includes all biochemical processes.
11. What is ATP?
A. Enzyme
B. Energy molecule
C. Protein
D. Hormone
Correct Answer: B. Energy molecule
Rationale: ATP stores and transfers energy.
