Virus structure and replication

During the lytic infection by a virus, the host cell is-

• destroyed
• copied
• passed on to the lysogenic cycle
• not affected

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

The capsid of a virus protects the virus from the external environment. What structure is this similar to in a plant cell?

• ribosome
• cell membrane
• vacuole
• cell wall

Tags

NGSS.MS-LS1-2

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

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

When a virus invades a living cell, its _______
takes over the cell's functions.

• outer coat
• genetic material
• core
• cytoplasm

Tags

NGSS.MS-LS1-2

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 happens in the lysogenic cycle? 

• Virus goes in and leaves the host cell
• Virus quickly kills the host cell
• Virus inject the nucleic acid into the host cell, and the nucleic acid integrates into the host cell DNA, and stay dormant for a long time
• Bacteria injects DNA into a host cell

Tags

NGSS.MS-LS3-1