Question

1. the component(s) of a virus that is/are extended from the envelope for attachment is/are the:

a. capsomeres
b. spikes
c. nucleic acid
d. viral whiskers

1. which of the following does a virus lack? select all that apply.

a. ribosomes
b. metabolic processes
c. nucleic acid
d. glycoprotein

1. what is another name for a nonenveloped virus?

a. enveloped virus
b. provirus
c. naked virus
d. latent virus

1. which of these infectious agents do not have nucleic acid?

a. viroids
b. viruses
c. bacteria
d. prions

Explanation:

Question 5

To solve this, we recall virus structure: Spikes are glycoprotein projections from the envelope (or capsid in non - enveloped) for attachment. Capsomeres are capsid subunits, nucleic acid is internal, and “viral whiskers” is not a standard term. So the correct option is b.

Viruses lack ribosomes (they use host ribosomes) and metabolic processes (they rely on host metabolism). They have nucleic acid (DNA/RNA) and may have glycoproteins (e.g., spikes). So options a and b apply.

A non - enveloped virus is also called a naked virus. Enveloped virus has an envelope, provirus is integrated viral DNA, latent virus is in a dormant state. So the correct option is c.

Answer:

b. spikes

Question 6