Cells and Viruses

Viruses can reproduce only under which of the following conditions?

• When they are outside a living organism

• When they carry out respiration

• When they grow or move

• When they are inside a host cell

What is the main function of the projections on the surface of a virus?

• They aid in respiration

• They help the virus grow

• They help the virus invade its host

• They help the virus digest food molecules

What do viruses have in common with living cells? They both...

• store genetic information in DNA and RNA

• have chloroplasts

• use glucose for cellular respiration

• have endoplasmic reticulum

A protein coat surrounding a virus is called a 

• prophage.
• virus.
• capsid.
• bacteria.

What do you call a cell without a nucleus?

• Eukaryote
• Prokaryote

What was the example of prokaryotes that was referred to in your drawing?

• bacteria
• fungus
• animal cells
• protists

Which of the following is found inside a prokaryote?

• cytoplasm
• DNA
• ribosomes
• all of these

A tiny non-living particle that invades and then multiplies inside of a living cell is called a:

• vaccine
• virus
• bacteriophage

A vaccine triggers your body to produce _____________ which help fight infections.

• antibiotics

• antibodies

• antigens

Antibiotics only work against what organisms ?

• viruses

• bacteria

• prions