Chapter 2/Lesson 1 Viruses

Question 1

Virus

Answer 1

Tiny, non-living particle that enters and reproduces inside a living cell.

Question 2

How do viruses reproduce?

Answer 2

Need to enter a host cell. Use their protein code to get into a cell, then use their own DNA to tell the cell to reproduce.

Question 3

Why are viruses considered non-living?

Answer 3

Do not respond to their surrounding? Can not take in or product food. Do not use their own energy to grow.

Question 4

What is a host?

Answer 4

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

Question 5

What is a parasite?

Answer 5

An organism that lives on or in a host, and causes it harm. Almost all viruses destroy their host cells.

Question 6

Bacteriophage

Answer 6

A virus that infects other viruses. Its name mean bacteria eater.

Question 7

Units of measurement to measure a virus

Answer 7

Nanometer. Smallest virus are 20 nm in diameter. Largest are up to 200 nm in diameter.

Question 8

How do Viruses multiply?

Answer 8

Enter a cell and tell the cell function to reproduce using its own DNA as the instructions.

Question 9

Surface Proteins

Answer 9

Parts of a virus outer coat that allows it to enter a host cell.

Question 10

Cold Virus

Answer 10

Can only enter human cells in the nose or throat. Unable to enter other cells in the body.

Question 11

Gene Therapy

Answer 11

A medial process that uses viruses to deliver treatments into human cells. Used for Cystic-Fibrosis.

Question 12

Cystic-Fibrosis

Answer 12

Disease that impacts the human body’s ability because they lack the genetic material to keep their lungs functioning.

Question 13

Vacine

Answer 13

A substance that is used in the human body to destroy viruses. Weakened versions of a virus that allow the human immune system to strengthen.