Life Science Chapter 7

When bacteria reproduce by _________________, one cell divides to form two identical cells.

• binary fission

• prokaryotes

• genetic material

• nitrogen

The ability to _________ is the only characteristic that viruses share with living organisms.

• chemicals

• decomposers

• multiply

• binary fission

Bacteria in swellings on the roots of peanut plants convert ________ gas from the air into compounds that the plants need to grow.

• vaccine

• active

• nitrogen

• flagellum

Bacteria are called ___________ because their genetic material is not contained in nuclei.

• decomposers

• prokaryotes

• vaccine

• active

A/An _______________ is a substance that stimulates the body to produce chemicals that destroy viruses or bacteria.

• vaccine

• flagellum

• binary fission

• genetic material

A virus that begins to multiply immediately after it enters a cell is called a/an ___________ virus.

• decomposer

• flagellum

• nitrogen

• active

A virus's __________ contains the instructions for making new viruses.

• prokaryotes

• genetic material

• chemical

• multiply

Some bacteria move by using a long, whiplike structure called a/an _____________.

• vaccine

• flagellum

• binary fission

• prokaryote

Autotrophic bacteria either use the sun's energy to make food or break down ______________ in their environment.

• chemicals

• nitrogen

• genetic materials

• decomposers

Some bacteria are called __________ because they break down large chemicals in dead organisms into small chemicals.

• prokaryotes

• vaccines

• decomposers

• chemicals