B4 - Organising Animals and Plants

Question 1

What is plasma?

Answer 1

-Straw-coloured liquid that transports:
All blood cells
Carbon dioxide
Small, soluble digested food molecules
Urea
Hormones
Distributes heat

Question 2

What do red blood cells do?

Answer 2

-Transport oxygen by haemoglobin

Question 3

What is haemoglobin?

Answer 3

-Red pigment that binds reversibly oxygen

Question 4

What do the white blood cells?

Answer 4

-Defence mechanism

Question 5

What do lymphocytes do?

Answer 5

-Produce antibodies and antitoxins

Question 6

What do phagocytes do?

Answer 6

-Engulf and digest microorganisms

Question 7

What are platelets do?

Answer 7

-No nucleus, role in blood clotting.

Question 8

What do arteries do?

Answer 8

-Carry blood away from heart to the organs

Question 9

What do veins do?

Answer 9

-Carry blood to the heart away from the organs

Question 10

What do capillaries do?

Answer 10

-Network between arteries and veins

Question 11

What is a double circulatory system?

Answer 11

-The blood goes through the heart twice in one cycle

Question 12

What is pulmonary circulation?

Answer 12

-Connection between lungs and heart

Question 13

What is systematic circulation?

Answer 13

-Connection between heart and body