Lesson 2, Chapter 4

Question 1

Apoptosis

Answer 1

Cell suicide.

Question 2

NK Cell

Answer 2

An immune system cell that will kill some abnormal cells

Question 3

Perforins

Answer 3

Spiky proteins that NK cells poke into abnormal cells’ mebranes

Question 4

Granzymes

Answer 4

Chemicals that enter abnormal cells and kill them

Question 5

Tumor

Answer 5

A mass of abnormal cells

Question 6

Mutation

Answer 6

A genetic abnormality

Question 7

Metastasis

Answer 7

The ability of cancerous cells to travel to different locations in the body and form new tumors

Question 8

Metastatic melanoma

Answer 8

A type of skin cancer that can spread to the liver or brain

Question 9

Benign tumors

Answer 9

Tumors that only grow in their original locations

Question 10

Carcinogens

Answer 10

Substances that cause damage to a cell’s DNA

Question 11

Obese

Answer 11

Severely overweight

Question 12

Colon

Answer 12

Large intestine

Question 13

Human papillomavirus

Answer 13

A sexually transmitted virus that can cause several types of cancer, including cervical cancer

Question 14

Hepatitis B and C viruses

Answer 14

Viruses that cause the most liver cancers

Question 15

Helicobacter pylori

Answer 15

A bacterium that can cause stomach ulcers and stomach cancer

Question 16

Mutations

Answer 16

Abnormalities in a cell’s DNA

Question 17

BRCA1 and BRCA2 mutations

Answer 17

Mutations that commonly cause breast cancer