Excretion

Question 0

Toxic substances

Answer 0

Are poisonous and can harm the cells of the body if not removed

Question 1

Excretion

Answer 1

Is one of the characteristics of all living things

The removal of toxic chemical substances which are made in the body during metabolism

Question 2

Three excretory organs

Answer 2

Kidneys

Lungs

Skin

Question 3

The kidneys filter

Answer 3

(Remove urea and salts) as the clean our blood
This process is called filtration
If your kidneys are damaged you may need to go on a dialysis machine

Question 4

Renal artery

Answer 4

Carries blood to kidney

Question 5

Renal vein

Answer 5

Carries blood from kidney

Question 6

Ureter

Answer 6

Transports urine to bladder

Question 7

Bladder

Answer 7

Stores urine

Question 8

Urethra

Answer 8

Releases urine

Question 9

Urea

Answer 9

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

Question 10

Lungs

Answer 10

• Carbon dioxide and water are waste products of the process of respiration in all the cells of the body.
• They’re carried to the lungs by the blood to be excreted.

Question 11

Test for carbon dioxide

Answer 11

Limewater

Question 12

Test for water

Answer 12

Cobalt chloride paper

Question 13

Skin

Answer 13

Human skin has sweat glands which lead to pores at the surface-water,salt and tiny amount of urea is excreted as sweat through these pores