Keywords - Mass Transport

Question 1

Cardiac output

Answer 1

total vol. of blood heart can pump per minute ->

vol of blood pumped each beat (stroke volume) * number of beats per min (heart rate)

Question 2

Cohesion-tension theory

Answer 2

H2O mols form H bonds between them so stick together (cohesion)
Column of cohesive H2O mols. pulled up xylem puts xylem under tension (negative pressure)

Question 3

Coronary arteries

Answer 3

arteries that supply blood to cardiac muscle of the heart

Question 4

Haemoglobin

Answer 4

globular protein (4 polypeptides around iron-containing haem group) in blood that readily combines w/ O2 to transport it around the body

Question 5

Positive cooperativity

Answer 5

Binding of 1st O2 mol to 1 of 4 binding sites on Hb mol makes binding of the second easier etc.

Question 6

Potometer

Answer 6

apparatus used to measure rate of H2O uptake from a plant shoot under different env. conditions

Question 7

Systole/diastole

Answer 7

stages of cardiac cycle in which heart muscle contracts (systole) and relaxes (diastole)

Question 8

Tissue fluid

Answer 8

fluid surrounding cells of body, similar to blood plasma but lacks proteins -> supplies nutrients to cells and removes waste products

Question 9

Translocation

Answer 9

process by which sucrose + some mineral ions transported from one part of a plant to another

Question 10

Transpiration

Answer 10

Evaporation of water from a plant