Bacteria and Viruses

When bacteria reproduce by binary fission, ________________________.

• two cells produce a third cell

• two cells produce two more cells

• one cell produces two cells

• one cell produces three or more cells

Tags

NGSS.MS-LS3-2

A way to prevent viral infections is through ___________.

• genetic engineering

• bioremediation

• antibiotics

• vaccinations

Which of the following is how bacteria are beneficial to farmers?

• Bacteria change nitrogen into a form plants can use.

• Bacteria change oxygen into nitrogen.

• Bacteria change the sugar in milk to lactic acid.

• Bacteria change harmful chemicals to harmless ones

What organism can live where nothing else lives?

• viruses

• bacteria

• cyanobacteria

• archaea

Most bacteria have _________________.

• one cell

• two cells

• three cells

• four or more cells

Tags

NGSS.MS-LS1-1

Which of the following is NOT a shape of bacteria?

• crystal

• spirilla

• cocci

• bacilli

Which of the following is NOT a shape of viruses?

• crystal

• sphere

• cylinder

• spirilla

What is one function that viruses share with living things?

• They eat living organisms

• They move on their own with a flagella

• They reproduce, but need a host cell

• They grow

Tags

NGSS.MS-LS3-2

Viruses reproduce by ____________________.

• nitrogen fixation

• the lysogenic and lytic cycles

• lytic cycle only

• binary fission

What is one way bacteria help the environment?

• They change oxygen into a form plants can use

• They change nitrogen into a form plants can use

• They change oxygen into nitrogen

• They change nitrogen into oxygen

Tags

NGSS.MS-LS2-3