Biological Approach (key words/concepts)

Question 1

Neurons definition

Answer 1

Cells that are specialised for communication.

Question 2

Nervous system

Answer 2

• This system sends messages back and forth between the brain and the body.
• Includes the brain, spinal cord, and a complex network of nerves.

Question 3

Synapse

Answer 3

• A region specialised for communication that sends and recieves chemical messages.
• Is in between neurons

Question 4

Hormones

Answer 4

• Chemicals realesed from glands which travel around the body via blood.
• To communicate between organs.

Question 5

Testosterone

Answer 5

• A hormone released mainly by the testes

example of an androgen

Question 6

Oestrogen

Answer 6

• A hormone released mainly by the ovaries

Question 7

Genes

Answer 7

• A unit of hereditary.
• Which carry instructions coded from the DNA from 1 generation to the next which controls development and influence.

Question 8

Evolution

Answer 8

• The change in the characteristics of a species over several generations
• Which relies on the process of natural selection.

Offspirng that have inherited benifical characteristics are more likley to survive