the heart

Question 1

how to get rate of transpiration/respiration etc

Answer 1

volume = distance x pi r2
rate = volume / time in mm3 s-1

Question 2

how humidity affects transpiration

Answer 2

less of a concentration gradient because of water in air
less diffusion and transpiration

Question 3

why do potometers need to be set up underwater

Answer 3

air bubbles break the flow of water molecules
H bonds disrupted
cannot be pulled up and break cohesion tension model

Question 4

atrial systole

Answer 4

• atrium contracts - highest pressure
• blood flow into relaxed ventricles
• atrioventricular valves open, semilunar close

Question 5

ventricular systole

Answer 5

• atria relax ventricles contract - pressure
• blood into pulmonary veins and aorta
• atrioventricular closes, semilunar open

Question 6

diastole

Answer 6

• both relaxed
• atrioventricular open and semilunar closed
• start to move into atria

Question 7

how to identify
neutrophils
lymphocyte
eosinophil
macrophage

Answer 7

n - lobed nucleus
l - large dark nucleus
e - stain red
m - kidney bean

Question 8

role of platelets

Answer 8

blood clotting and prevent entry of bacteria

Question 9

role of basophil

Answer 9

allergic response and prevent blood clotting

Question 10

role of lymphocyte

Answer 10

specific immune response
b cells - antibodies
t cells - digest infected cells