Drugs, bodies and bacteria (p17 to 22, 2m and n)

Question 0

What is drug addiction?

Answer 0

A physical need for a drug, without it withdrawal symptoms are felt

Question 1

What do all drugs do?

Answer 1

Interfere with the bodies chemical reactions.

Question 2

What is tolerance to drugs?

Answer 2

When the body gets used to it so more is needed to have the same effect.

Question 3

What class of drug is most dangerous?

Answer 3

Class A

Question 4

What do sedatives or depressants do to our bodies?

Answer 4

Slow reactions down.

Question 5

What problems are caused by carbon monoxide which comes from broken boilers and cigarettes?

Answer 5

Stops blood being able to carry oxygen as it combines with the Haemoglobin in the blood.

Question 6

What are carcinogens?

Answer 6

Chemicals that cause cancer

Question 7

What organs are affected by smoking?

Answer 7

Heart, blood vessels (heart attacks and strokes) and lungs (lung disease).

Question 8

What is affected by tar in cigarettes?

Answer 8

Cilia in lungs get damaged causing chest infections to become more likely.

Question 9

What is the main effect of alcohol on the body?

Answer 9

Reduced activity in the nervous system. (Slows things down)

Question 10

What parts of the body are affected by solvents?

Answer 10

Lungs and nerves.

Question 11

What organ can be damaged in long term solvent abuse?

Answer 11

The brain ( brain damage)

Question 12

What are pathogens?

Answer 12

Microbes or microorganisms that cause disease.

Question 13

What are the four types of microorganisms?

Answer 13

Bacteria, fungi, viruses and Protozoa

Question 14

What are Protozoa?

Answer 14

Single celled organisms

Question 15

All pathogens are parasites, what is a parasite?

Answer 15

Something that lives off another organism and gives nothing in return.

Question 16

Where might you find useful bacteria in our bodies?

Answer 16

In the digestive system

Question 17

How do bacteria make us feel ill?

Answer 17

Damage cells and produce toxins (poisons)

Question 18

Approximately how many viruses could fit on a bacterium?

Answer 18

100

Question 19

How do viruses reproduce?

Answer 19

Invade cells then use cells to make copies of themselves.

Question 20

How do viruses make you feel ill?

Answer 20

When the cells burst to release viruses cell damage occurs.

Question 21

What do you get if you don’t have enough vitamin c?

Answer 21

Scurvy

Question 22

What do you get if you don’t have enough iron?

Answer 22

Anaemia - reduction in the number of red blood cells