Biology Key Words

Question 1

Hormone

Answer 1

Chemical messenger in the body

Carried in blood

Question 2

Auxin

Answer 2

Plant hormone

Question 3

Homeostasis

Answer 3

Maintaining a constant body environment

Question 4

Receptor

Answer 4

Senses a change in the environment

Question 5

Sensory neurone

Answer 5

A nerve cell that carries the electrical impulse from the receptor to the central nervous system

Question 6

Relay neurone

Answer 6

Carries the electrical impulse from the sensory neurone to motor neurone

Question 7

Motor neurone

Answer 7

Carries the electrical impulse from the central nervous system to the effector

Question 8

Effector

Answer 8

Part of the body that responds to a change in environment(Usually a muscle)

Question 9

Synapse

Answer 9

Gap between 2 neurones.

Chemical messengers diffuse between the gap to pass on message

Question 10

Placebo

Answer 10

A sugar coated pill that does not contain the drug being tested.
Used to check it is the drug that is working and not the mind believing it is better

Question 11

Blind drug trial

Answer 11

Drug trial where the patient does not know if they are receiving the drug or placebo

Question 12

Double blind trial

Answer 12

Drug trial where neither the doctor or patient know if they are receiving the drug or a placebo

Question 13

Metabolic Rate

Answer 13

The speed of chemical reactions in the body

Question 14

Follicle Stimulating hormone (FSH)

Answer 14

Hormone that stimulates the ovaries to mature the eggs. Made in pituitary gland

Question 15

Oestrogen

Answer 15

Hormone made in ovaries. Stops FSH from being made

Question 16

Lutenising Hormone (LH)

Answer 16

Hormone that stimulates the ovaries to release the egg