10-20-2022: Viruses and stuff

What is the structure of a virus?

• A cell

• DNA or RNA with a protective protein coat

• DNA or RNA just hanging out loose

• A eukaryote with a protective protein coat

Are viruses living or nonliving?

• Living

• Nonliving

Can viruses reproduce?

• No, they replicate, but only within a host cell inside of a different living thing.

• Yes, always.

• Yes, but they need a bacterial entry code to do it.

Which of the following is FALSE about viruses?

• They contain genetic material.

• They require a host cell to replicate.

• They are nonliving.

• They are made of cells.

Which of the following is true about viruses? (HINT: There are three correct answers).

• Living

• Nonliving

• Made of cells

• Contains genetic material

• Requires a host cell to reproduce

Which of the following is true about bacteria? (HINT: There are three correct answers).

• Living

• Nonliving

• Made of cells

• Contains genetic material

• Requires a host cell to reproduce

A virus requires a host cell for what process?

• Replication

• Homeostasis

• Excretion

• Nutrition

True or False: Only bacteria (and not viruses) can be seen under a compound light microscope.

• True

• False

Which of the following is a function of bacteria?

• Produce light energy used by producers in an ecosystem

• Decrease the amount of energy needed for an ecosystem

• Break down organic debris to recycle nutrients in the ecosystem

• Convert carbon dioxide into oxygen for photosynthetic organisms in the ecosystem

The genetic material that viruses have inside can be:

• RNA

• Loose nucleotides not chained to a nucleic acid

• ATP

• DNA