Lesson 2

Question 1

Virus

Answer 1

A tiny, non living particle that enters and then reproduces inside a living cell

Question 2

Host

Answer 2

An organism that provides a source of energy for a virus or another organism

Question 3

Parasite

Answer 3

An organism that lives on or in a host and causes it harm

Question 4

Vaccine

Answer 4

A substance introduced in the body to help produce chemicals that destroy specific virus

Question 5

Bacteria

Answer 5

Single-called organisms

Question 6

Cytoplasm

Answer 6

The region inside the cell membrane

Question 7

Ribosomes

Answer 7

Located in the cytoplasm are tiny structures

Question 8

Flagellum

Answer 8

A long whiplike structure that helps a cell to move

Question 9

Cellular Respiration

Answer 9

The process of breaking down food to release energy

Question 10

Binary Fission

Answer 10

One cell divides to form 2 identical cells

Question 11

Conjugation

Answer 11

Sometimes bacteria reproduce sexually

Question 12

Endospore

Answer 12

A small rounded, thick-walled resting cell that forms inside a bacterial cell

Question 13

Pasteurization

Answer 13

The food is heated to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food

Question 14

Decomposers

Answer 14

Organisms that break down large, complex chemicals in dead organisms into small, simple chemicals