B4 Organising Plants and Humans (Blood, Ciruclation, Heart, Lungs)

Question 1

Name the cell that carry oxygen.

Answer 1

Red blood cells

Question 2

Name the chemical a certain cell uses to carry oxygen

Answer 2

Haemoglobin

Question 3

When ‘ haemoglobin is full of oxygen, what is it called?

Answer 3

Oxyhemoglobin

Question 4

Do red blood cells have a nucleus?

Answer 4

No

Question 5

Do white blood cells have a nucleus?

Answer 5

Yes

Question 6

What is the job of white cells

Answer 6

White cells fight infection

Question 7

What are antitoxins

Answer 7

Antitoxins are chemicals made to destroy poisons made by bacteria

Question 8

What is the role of platelets?

Answer 8

They form blood clots to stop bleeding

Question 9

How does blood form clots when we are cut?

Answer 9

Produce a network of fibres that stop cells flowing out

Question 10

What is the role of scabs?

Answer 10

Scabs stop more bactona getting in the wound

Question 11

Name 4 substances plasma carries

Answer 11

-Nutrients
-hormones
-waste products(CO2, Urea)
-proteins

Question 12

What are the 4 components of blood?

Answer 12

-Plasma
-Red blood cells
-White blood cells
-Platelets

Question 13

What is plasma in the blood

Answer 13

A yellowish liquid that transports blood cells and other dissolved substances

Question 14

What substances do the plasma transport

Answer 14

Red blood cells, white blood cells, platelets, nutrients