Science Ch. 6 and 7 Test

Question 1

Viruses are living and cannot reproduce on their own.

Answer 1

False, it is non-living.

Question 2

Viruses lack most of the characteristics of living things

Answer 2

True.

Question 3

The average virus is quite large when compared with cells.

Answer 3

False, they are quite small when compared.

Question 4

Viruses can cause or help to prevent and treat disease.

Answer 4

True.

Question 5

Vaccines help the body produce chemicals that cause viruses.

Answer 5

False, they prevent viruses.

Question 6

A virus is a tiny particle that enters and then reproduces inside a living _____.

Answer 6

Cell.

Question 7

The organism that a virus enters and multiplies inside of is called a(n) ______.

Answer 7

Host.

Question 8

A(n) ______ is an organism that lives on or in a host and causes it harm.

Answer 8

Parasite.

Question 9

A(n) ______ is a substance introduced in the body to help produce chemicals that destroy specific viruses.

Answer 9

Vaccine

Question 10

All viruses have a structure featuring an inner core and a protective _____ coat.

Answer 10

Protein.

Question 11

How are bacterial cells different rom the cell of eukaryotes?

Answer 11

They have a true nucleus.

Question 12

List four ways that bacteria are helpful to people.

Answer 12

1. They make food. 2. Provide oxygen 3. Helps the environment 4. Helps make medicine.

Question 13

Tiny single-celled organisms that live almost everywhere.

Answer 13

Bacteria

Question 14

The process of breaking down food to release energy.

Answer 14

Cellular Respiration

Question 15

A process by which bacteria reproduce asexually.

Answer 15

Binary fission

Question 16

A process by which bacteria reproduce sexually.

Answer 16

Conjugation

Question 17

A method of slowing down food spoilage.

Answer 17

Pasteurization

Question 18

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

Answer 18

Decomposers