Bacteria & Viruses

Which statement best describes the size of a virus?

• Smaller than bacteria
• Larger than a parasite
• About the size of a dime
• Larger than a blood cell

What does a virus have on the inside?

• DNA, but never RNA
• RNA but never DNA
• DNA or RNA
• neither DNA or RNA

A tiny, nonliving particle that invades and then reproduces inside a living cell.

• fungi

• bacteria
• virus
• parasite

Living cell in which a virus can actively multiply.

• host cell
• microbe
• infection
• fungi

Which of the following statements about influenza is incorrect?

• The flu is the same as the common cold.

• A vaccine can increase the chance of prevention for the flu.

• The immune system is responsible for eradicating the flu in your body.

• The flu is a viral disease.

Tags

NGSS.HS-LS1-3

Diseases that can be transmitted between organisms are:

• inherited
• infectious
• congenital
• enviromental

Which is the BEST way to help prevent the flu virus from becoming a pandemic?

• sleeping 8 hours a night
• taking antibiotics
• getting a vaccination
• eating fruits and vegetables

Tags

NGSS.HS-ETS1-1

The bacteria that causes bubonic plague is transmitted to human by fleas. Which term BEST describes the role of the fleas in transmitting bubonic plague?

• vector
• air
• decomposer
• pathogen

Why do doctors suggest that people get a flu vaccine each year?

• viruses replicate more rapidly over time
• viruses can mutate from year to year
• vaccines are absorbed by the body after a year
• vaccines get stronger over time

If a microbe lacks the basic cellular structure to reproduce, how does it make copies of itself?

• by creating new cells
• by combining an egg and a sperm
• by using the structures of the host cell
• by dividing the nucleus to make two new microbes

Tags

NGSS.MS-LS3-2