bacteria vs viruses

Which one of the following does NOT describe a bacterium?

• single-celled (only consists of one cell)

• prokaryotic (no nucleus or other membrane-bound organelles)

• Falls in the same kingdom as viruses.

• microscopic (must be viewed with the aid of a microscope)

With bacteria, the term "replication" means to __________.

• infect

• become harmless

• reduce in size

• make more of itself

The process by which bacteria replicate, is called ________.

• sexual reproduction

• binary fission

• regeneration

• budding

A bacterial infection happens when large bacterial numbers overwhelm the body's ___________ system.

• skeletal system

• digestive system

• nervous system

• immune system

A bacterium that harms an organism in some way, is called __________.

• a symbiotic microbe

• an archaebacterium

• a pathogen

• an antibiotic

The streptococcus bacterium causes ______.

• the black plague

• ebola

• strep throat

• anthrax

Bacteria can be all of the following, except:

• harmless

• viral

• beneficial

• symbiotic

A medicine given by mouth or injection, that stimulates the immune system to kill bacteria, is called a(n) ________.

• antibiotic

• tranquilizer

• vaccine

• vitamin

A tail-like extension on a bacterium is called a(n) _______.

• cilium

• ribosome

• flagellum

• riboplasm

What main characteristic differentiates a bacterium from a virus?

• A bacterium is an organism, while a virus is not.

• A bacterium is microscopic, while a virus is visible with the naked eye.

• A bacterium cannot multiply, while a virus can make many more viruses.

• A bacterium must be prevented with a vaccine, while a virus can be cured with antibiotics.