Biology

Question 1

Energy

Answer 1

The energy in a

Question 2

Nervous system

Answer 2

Brain,spinal cord,all the nerves

Question 3

Sensory nerve

Answer 3

Sends a message to the brain from the sense organ

Question 4

Motor nerve

Answer 4

Sends a message from the brain to a muscle

Question 5

Messages

Answer 5

Are sent along nerves as pulses of electricity

Question 6

The eye contains

Answer 6

The cornea,iris,lens,pupil,retina,optic nerve,ciliary muscle

Question 7

Excretion

Answer 7

excretion is the removal of the toxic chemical substances,which are made in the body during metabolism

Question 8

We have three excretory organs

Answer 8

Kidneys,lungs ,skin

Question 9

Kidneys

Answer 9

Filter urea ,salts from our blood.this is processed is called filtration.

Question 10

Urea

Answer 10

Which is toxic,is produced in the liver from excess protein

Question 11

Lungs

Answer 11

Carbon dioxide and water are waste products of the process of respiration in all the cells of the body

Question 12

Test for Carbon dioxide

Answer 12

Limewater

Question 13

Test for water

Answer 13

Cobalt chloride paper

Question 14

Skin

Answer 14

Human skin has sweat glands which lead to pores at the surface-water,salt and a tiny amount of urea is ex created as wear