Viruses & Enzymes Review

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

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

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 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

What disease has been eradicated from nature? How was this done?

• polio, vaccines

• HIV, vaccines

• small pox, antibiotics

• small pox, vaccines

Viral genetic material can come in the form of -

• DNA

• RNA

• Both

• Neither

HIV has genetic material made of -

• Protein
• Carbohydrate
• DNA
• RNA

A new virus is called a(n) ____ and usually comes from ____.

• unfamiliar virus, animals

• emerging virus, plants

• emerging virus, animals

• novel virus, plants

What is a vaccine?

• A vaccine is a harmless version of a virus that trains the immune system to recognize & respond quickly to the real virus.

• A vaccine is a medication used to treat infectious diseases.
• A vaccine is a type of virus that causes immunity to a specific disease.
• A vaccine is a procedure used to diagnose infectious diseases.

Stages of viral replication

• attachment, entry, insertion, replication, assembly, and transmission

• attachment, entry, insertion, replication, assembly, and release

• attachment, entry, insertion, replication, assembly, and shedding

• attachment, entry, insertion, transcription, translation, and release

A catalyst will cause a chemical reaction to -

• slow down
• stop
• have no effect
• speed up

Tags

NGSS.HS-PS1-5