AP Biology Virus/Bacteria Review

What is most likely the purpose of the protein coat surrounding a virus?

• protect it from being degraded

• replicate vDNA inside the host cell

• produce proteins within the host cell

• destroy the nucleus of the host cell

Which statement regarding viruses is true?

• a virus can only reproduce inside of a living cell
• viruses do not contain DNA
• viruses are unicellular
• viruses are generally larger than cells

What feature do viruses have in common with animal cells?

• ability to form proteins at the ribosomes
• existence of lipids in cell membranes
• presence of genetic code in nucleic acid
• production of energy by a mitochondrion

Which best describes the basic structure of a virus?

• nucleic acid strand surrounded by a protein coat
• a tail surrounded by a protein coat
• a tail surrounded by a carbohydrate coat
• nucleic acid strand surrounded by a carbohydrate coat

Most viruses contain

• nucleic acids.

• ribosomes.

• mitochondria.

• cytoplasm.

What part of the phage is the DNA?

• A
• B
• C
• D

A(n) _____ is a virus that enters a bacterial cell.

• endospore
• decomposer
• plasmid
• bacteriophage

Which viral life cycle allows viral genetic material to lay dormant while the host cell reproduces?

• lytic
• mitosis
• lysogenic
• S phase

Which viral life cycle kills its host cell by lysing?

• lytic
• mitosis
• lysogenic
• S phase

What do viruses need to reproduce?

• They need genetic material.

• They need a host cell.

• They need centrioles.

• They need insulin.