Download Quiz 19 Name 1. Which of the following does not automatically

Quiz 19
Name _______________________
1. Which of the following does not automatically mean an entity is alive?
A) Presence of DNA
B) Presence of a nucleus
C) Presence of cells
D) Ability to reproduce independently
E) Ability to run metabolic processes
2. Reverse transcription means:
A) Reading DNA 5’ to 3’ during transcription
B) Producing mRNA from proteins
C) Reading DNA 3’ to 5’ during transcription
D) Producing tRNA from mRNA
E) Producing DNA from mRNA
3. People with mutations leading to nonfunctional membrane receptors on their helper T cells are
immune to HIV infection. Why?
A) HIV cannot enter the host cell.
B) Reverse transcriptase cannot transcribe RNA to DNA.
C) Viral mRNA cannot be transcribed from the integrated provirus.
D) Viruses cannot bud from the host cell.
4. AZT is a nucleotide analog used to treat HIV infections. It is a nonfunctional thymine (T) nucleotide.
Which step does AZT hamper in the reproductive cycle of the HIV virus?
A) entry into the cell
B) reverse transcription of DNA from RNA
C) transcription of RNA from proviral DNA
D) viral assembly within the cell
5. The hosts a virus can infect are determined by:
A) the proteins on the virus surface and the host cell surface.
B) whether the virus’ nucleic acid is DNA or RNA.
C) the proteins in the host's cytoplasm.
D) the enzymes produced by the virus before it infects the cell.
E) the enzymes carried by the virus.
6. Which of the following is not a part of some or all viruses?
A) nucleic acids
B) a protein coat
C) phospholipids
D) glycoproteins
E) ribosomes
7. What is the name given to viruses with single-stranded RNA that acts as a template for DNA
synthesis?
A) viroids
B) bacteriophages
C) proviruses
D) retroviruses
E) all viruses do this
8. Which of the following places the events of the viral life cycle in the correct order?
A) genome replication, capsid assembly, host cell entry
B) host cell entry, genome replication, capsid assembly
C) capsid assembly, release from host cell, genome replication
D) genome replication, host cell entry, host cell release
E) genome replication, host cell entry, protein synthesis
9. You isolate an infectious substance that is capable of causing disease in plants, but you do not know
whether the infectious agent is a bacterium or virus. You have four methods at your disposal that you
can use to analyze the substance in order to determine the nature of the infectious agent.
I. Treating the substance with nucleases that destroy all nucleic acids and then determining whether it
is still infectious
II. Filtering the substance to remove all elements smaller than what can be easily seen under a light
microscope
III. Culturing the substance by itself, away from any plant cells, to see if it can reproduce
IV. Treating the sample with proteases that digest all proteins and then determining whether it is still
infectious
Which treatment would allow you to distinguish between a viral or bacterial disease?
A) I
B) II
C) III
D) IV
E) either II or IV
10. Which of the following is/are characteristics of HIV?
A) It carries its own reproductive enzymes.
B) It inserts its genetic material permanently into the host’s genome.
C) Its nucleic acid is DNA
D) A and B
E) All of the above