Blood

Question 1

Name the liquid which carries the blood components round the body.

Answer 1

Plasma

Question 2

Name the part of the blood labelled B

Answer 2

Plasma

Question 3

Name four substances dissolved in the plasma

Answer 3

Digested food - glucose, amino acids, fatty acids, glycerol
Waste products - urea and carbon dioxide
Hormones
Antibodies

Question 4

What is the purpose of red blood cells in the blood?

Answer 4

Transport oxygen around the body

Question 5

Name the part of the blood labelled C

Answer 5

Red blood cell

Question 6

Explain how a red blood cell is adapted for its function?

Answer 6

Biconcave shape - increasing surface are to absorb more oxygen
Contains a red pigment called haemoglobin which binds to oxygen
No nucleus - more room for haemoglobin

Question 7

Name the part of the blood labelled A

Answer 7

Platelets

Question 8

What is the purpose of white blood cells in the blood?

Answer 8

Part of the immune system.
Protects body from invading pathogens
Phagocytosis
Make antibodies and antitoxins

Question 9

Name the part of the blood labelled D

Answer 9

White blood cell

Question 10

How are white blood cells adapted for their function?

Answer 10

Nucleus - codes for proteins such as antitoxins and antibodies
Can engulf and digest pathogens

Question 11

Name the component in the blood that causes blood to clot.

Answer 11

Platelet

Question 12

Why are platelets important?

Answer 12

Cause blood to clot to form a scab
Prevents excessive bleeding
Prevents pathogens entering the body