Test 2

Question 1

What is the acronym that we use to remember the correct order of the hormones in the menstrual cycle?

Answer 1

F. FSH
O. Oestrogen
L. LH
P. Progesterone

Question 2

What do the hormones FSH, LH, oestrogen and progesterone do?

Answer 2

FSH- Causes an egg follicle to mature

Oestrogen- Builds up the uterus lining

LH- Causes ovulation

Progesterone- Maintains the uterus lining

Question 3

What does progesterone inhibit?

Answer 3

FSH

To prevent more eggs maturing

Question 4

DNA is a polymer made up of monomers called what?

Answer 4

Nucleotides

Question 5

What is the structure of DNA?

Answer 5

• double helix

• complimentary base pairs

• sugar-phosphate backbone

Question 6

What are reflexes?

Answer 6

Automotive, very fast, protective responses

Question 7

What is the order of a reflex?

Answer 7

1. Stimulus
2. Receptor
3. Sensory Neurone
4. Relay Neurone
5. Motor Neurone
6. Effector (muscle or gland)
7. Response

Question 8

What is Fermentation and what is the word equation?

Answer 8

Fermentation is anaerobic respiration in yeast.

Glucose —> Ethanol + Carbon dioxide

Question 9

What are enzymes?

Answer 9

Biological catalysts which control rate of cell reactions E.g. respiration and photosynthesis

Question 10

What are the two parts of an enzyme substrate complex?

Answer 10

Active site

Substrate

*They are both complimentary to each over. They are specific as they only work with one substrate.

Question 11

How does temperature effect enzymes?

Answer 11

If temp is too high: Enzymes become denatured leading to irreversible change to the enzymes structure

If temp is too low: there is not enough kinetic energy therefore there are less collisions leading to less enzyme substrate complexes.