Medical College Admission Test (MCAT) Biology Quiz 02

Question 1 of 10

1. Question

Unlike eukaryotic cells, viruses aren’t considered acellular because they are acellular. Which among the following lacks a virus?

Capsid and Nucleus
Capsid and Nucleic acid
Endoplasmic Reticulum
Organelles

Question 2 of 10

2. Question

Bacteriophages infect bacteria. What do bacteriophages do to their host?

It enters into the bacteria and manipulates the host
It simply injects its genetic material while its structures remain outside of the bacteria.
Destroy bacterias envelope and inject its genetic material
It reproduces through the use of cell division.

Question 3 of 10

3. Question

Bacteriophages are organisms like all the viruses. The following are the components of a bacteriophage exept?

Capsid
Cell wall
Nucleic Acid
Tail Sheath and Tail fibers

Question 4 of 10

4. Question

Which among the following statements does not describe retroviruses?

Retroviruses are single-stranded RNA Viruses
Retroviruses have an enzyme called reverse transcriptase which helps synthesize DNA from single-stranded RNA
Retroviruses have no protective protein-coating. It usually contains double-stranded DNA.
One of the examples of a retrovirus is a human immunodeficiency virus (HIV).

Question 5 of 10

5. Question

Enveloped viruses can fuse themselves to the plasma membrane of a cell. Which of the following is true about viruses?

A virus such as bacteriophages use capsid to leech off of the cell membrane
Bacteriophages die and disintegrate
Virus infects everyone
HIV virus has to bind with CCR5 found on white blood cells to infect the cell.

Question 6 of 10

6. Question

Viruses don’t have the ability to reproduce themselves. What happens to DNA viruses if it enters into the cell’s nucleus?

It transcribes into mRNA
It initiates cell's death
Maximizes cell's machinery while surviving to the host cell.
It creates superinfection

Question 7 of 10

7. Question

A host cell reacts differently if it is being alienated by different organisms. When mature viruses release particles known as lyse (lysis) what happens to the host cell?

Virus reproduces
The host cell eventually dies
The host cell will create a bond with the virus
The cell tries to protect itself from the virus causing the virus to die or leave its host.

Question 8 of 10

8. Question

Bacteriophages penetrate itself into the host cell. What term is used when a bacteriophage enters to lyptic phase?

Provirus
Virulent
Superinfection
Prophage

Question 9 of 10

9. Question

Cells are characteristically microscopic in size. Which among the following situation accurately describes what happens during the cell cycle?

The cell grows
The cell synthesizes its DNA
The cell divides itself
All of the above

Question 10 of 10

10. Question

Interphase is said to be the longest part of the cell cycle. What stage of the interphase is responsible for the creation of the organelles such as mitochondria, ribosomes, and endoplasmic reticulum?

M Stage: Mitosis
G1 Stage: Presynthetic Gap
S Stage: Synthesis of DNA
G2 Stage: Postsynthetic Gap

Medical College Admission Test (MCAT) Biology Quiz 02

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