Blood

Question 1

Blood composition

Answer 1

plasma, platelets, red blood cells, white blood cells

Question 2

Plasma composition

Answer 2

water, protein(antibodies + hormones) + dissolved materials

Question 3

Plasma function

Answer 3

Transport medium

Question 4

Serum

Answer 4

Plasma without clotting factors

Question 5

Red blood cells - fancy name

Answer 5

Erythrocyte

Question 6

red blood cells - shape

Answer 6

Small biconcave (increases surface area for oxygen exchange)

Question 7

Red blood cell lifespan

Answer 7

4 months. Produced + broken down quickly

Question 8

Red blood cells - simple or complex

Answer 8

Simple - no nucleus or mitochondria

Question 9

Red blood cells - function

Answer 9

Transports oxygen

Question 10

Platelets - function

Answer 10

Clotting to prevent pathogen entry and blood loss

Question 11

Whiteblood cells - shape

Answer 11

Large, no defined shape

Question 12

White blood cells - nucleus or no nucleus

Answer 12

nucleus

Question 13

White blood cells - lifespan

Answer 13

Days or years - memory cells live years post infection

Question 14

White blood cells function

Answer 14

fight infection - phagocytes engulf bacteria, lymphocytes produce antibodies

Question 15

blood functions

Answer 15

Transport: oxygen via red blood cells, everything else via plasma
Disease defence: WBCs and clotting factors

Question 16

Rhesus factor

Answer 16

Pos needs pos, neg needs neg - Pearse