MCAT Biology Reviewed Exam
2026/2027 Updated Verified Multiple
Choices Questions and Solutions A+
Pass Guaranteed
1. Hyperbaric oxygen may be used as a treatment for certain types of
bacterial infections. In this therapy, the patient is placed in a which
the partial pressure of oxygen is significantly increased, increasing
the partial pressure of oxygen in the patient's tissues. This
treatment is most likely used for infections with:
A. obligate aerobic bacteria
B. facultative anaerobix bacteria
C. aerotolerant anarobic bacteria
D. obligate anaerobic bacteria
- ANS - D
2. Which of the following does NOT describe connective tissue cells?
A. They account for most cells in muscles, bones, and tendons
B. They secrete substances to form the extracellular matrix
C. in organs, they tend to form the stroma
D. In organs, they provide support for epithelial cells
- ANS - A
,3. Which of the following types of nucleic acid could form the genome
of a virus?
I. Single-stranded RNA
II. Double-stranded RNA
III. Single-stranded DNA
A. I only
B. II only
C. I and II only
4. D I, II and III
- ANS - D
5. Which of the following activities occurs in the Golgi apparatus?
A. Synthesis of proteins
B. Modification and distribution of proteins
C. Breakdown of lipids and carbohydrates
D. Production of ATP
- ANS - B
6. Mitochondrial DNA is:
I. circular
II. self-replicating
III. single-stranded
A. I only
B. II only
C. I and II only
, D. I, II and III
- ANS - C
7. Which of the following is NOT a function of the smooth
endoplasmic reticulum?
A. Lipid synthesis
B. Poison detoxification
C. Protein synthesis
D. Transport of proteins
- ANS - C
8. What is the main function of the nucleolus?
A. Ribosomal RNA synthesis
B. DNA replication
C. Cell division
D. Chromosome assembly
- ANS - A
9. Which of the following organelles is surrounded by a single
membrane?
A. Lysosomes
B. Mitochondria
C. Nuclei
D. Ribosomes
- ANS - A
, 10. Which of the following is NOT a difference that would allow
one to distinguish a prokaryotic and a eukaryotic cell?
A. Ribosomal subunit weight
B. Presence of a nucleus
C. Presence of a membrane on the outside surface of the cell
D. Presence of membrane-bound organelles
- ANS - C
11. Which of the following does NOT contain tubulin?
A. Cilia
B. Flagella
C. Microfilaments
D. Centrioles
- ANS - C
12. Herpes simplex virus (HSV) enters the human body and
remains dormant in the nervous system until is produces an
outbreak after exposure to heat, radiation, or other stimuli. Which
of the following statements correctly describes HSV?
A. While it remains dormant in the nervous system, the virus is
in its lytic cycle
B. During an outbreak the virus is in the lysogenic cycle
C. Herpes simplex virus adds it genetic information to the
genetic information of the cell
2026/2027 Updated Verified Multiple
Choices Questions and Solutions A+
Pass Guaranteed
1. Hyperbaric oxygen may be used as a treatment for certain types of
bacterial infections. In this therapy, the patient is placed in a which
the partial pressure of oxygen is significantly increased, increasing
the partial pressure of oxygen in the patient's tissues. This
treatment is most likely used for infections with:
A. obligate aerobic bacteria
B. facultative anaerobix bacteria
C. aerotolerant anarobic bacteria
D. obligate anaerobic bacteria
- ANS - D
2. Which of the following does NOT describe connective tissue cells?
A. They account for most cells in muscles, bones, and tendons
B. They secrete substances to form the extracellular matrix
C. in organs, they tend to form the stroma
D. In organs, they provide support for epithelial cells
- ANS - A
,3. Which of the following types of nucleic acid could form the genome
of a virus?
I. Single-stranded RNA
II. Double-stranded RNA
III. Single-stranded DNA
A. I only
B. II only
C. I and II only
4. D I, II and III
- ANS - D
5. Which of the following activities occurs in the Golgi apparatus?
A. Synthesis of proteins
B. Modification and distribution of proteins
C. Breakdown of lipids and carbohydrates
D. Production of ATP
- ANS - B
6. Mitochondrial DNA is:
I. circular
II. self-replicating
III. single-stranded
A. I only
B. II only
C. I and II only
, D. I, II and III
- ANS - C
7. Which of the following is NOT a function of the smooth
endoplasmic reticulum?
A. Lipid synthesis
B. Poison detoxification
C. Protein synthesis
D. Transport of proteins
- ANS - C
8. What is the main function of the nucleolus?
A. Ribosomal RNA synthesis
B. DNA replication
C. Cell division
D. Chromosome assembly
- ANS - A
9. Which of the following organelles is surrounded by a single
membrane?
A. Lysosomes
B. Mitochondria
C. Nuclei
D. Ribosomes
- ANS - A
, 10. Which of the following is NOT a difference that would allow
one to distinguish a prokaryotic and a eukaryotic cell?
A. Ribosomal subunit weight
B. Presence of a nucleus
C. Presence of a membrane on the outside surface of the cell
D. Presence of membrane-bound organelles
- ANS - C
11. Which of the following does NOT contain tubulin?
A. Cilia
B. Flagella
C. Microfilaments
D. Centrioles
- ANS - C
12. Herpes simplex virus (HSV) enters the human body and
remains dormant in the nervous system until is produces an
outbreak after exposure to heat, radiation, or other stimuli. Which
of the following statements correctly describes HSV?
A. While it remains dormant in the nervous system, the virus is
in its lytic cycle
B. During an outbreak the virus is in the lysogenic cycle
C. Herpes simplex virus adds it genetic information to the
genetic information of the cell
