Viruses Furr

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 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

Which of the following happens as part of both the lyltic cycle and the lysogenic cycle?  

• New viruses are made
• The host cell dies
• The entire virus infects the cell
• The virus injects its nucleic acid into the host cell

The lytic cycle involves several steps. Which of the following is the final step of the lytic cycle.

• The host cell bursts
• The virus injects its nucleic acid
• New viruses begin to be made
• The viral DNA becomes part of the host cell's DNA

How do viruses reproduce?

• They copy their own genetic material inside a protein coat.
• They kill a cell and reproduce inside it
• They invade a living cell and use the cell's functions to replicate their genetic material
• They do not reproduce because they are not technically living things

What is the capsid of a virus?

• The disease it causes
• The receptors to which it binds
• Its genetic material
• Its protein coat

Which of the following occurs after a virus attaches to a host cell in the viral reproduction process?

• The host cell dies
• The virus dies
• The virus inserts its genetic information into the host cell
• copies of the virus are immediately released from the host

A tomato plant in a greenhouse was found to be infected with tobacco mosaic virus. Which of the following best describes how the virus reproduced?

• The virus made its own spores
• The virus produced seeds in the tomatoes
• The virus used the host plant's resources and machinery to reproduce
• The virus immediately killed the host plant and was free to reproduce

A virus has a very simple structure. Which of the following is part of the viral structure?

• Organelles
• Cell membrane
• Host cell
• Nucleic acid

Individuals with HIV sometimes contract pneumonia infections that are rare in the rest of the population because people with HIV...

• are unable to fight off these pneumonia-causing organisms
• are more often exposed to these pneumonia-causing organisms
• release pheromones that attract pneumonia-causing organisms
• release substances that increase the strength of the pneumonia-causing organisms