IMMS

Question 1

Site of oxidative phosphorylation?

Answer 1

Mitochondria

Question 2

Where does the Krebs cycle occur?

Answer 2

Matrix

Question 3

On what membrane are the proteins involved in elactron transport ?

Answer 3

Inner membrane

Question 4

Siet of protein synthesis

Answer 4

Rough Endoplasmic reticulum

Question 5

3 types of fillament proteins

Answer 5

Microfilaments- Actin
Microtubules- Tublin protein
Intermediate filament- 6 types of protein

Question 6

4 main catagories of protein

Answer 6

Transporters (Facilitated diffusion), Anchors (Desmosomes), Receptors, Enzymes

Question 7

Homeostasis?

Answer 7

the maintenance of a constant internal environment

Question 8

Osmolality?

Answer 8

The concentration of an osmotic solution, expressed in terms of osmoles

Question 9

Oncotic pressure ?

Answer 9

form of osmotic pressure exerted by proteins, in blood pressure , tends to pull water in to circulatory system from interstitial fluid

Question 10

Osmotic pressure?

Answer 10

pressure exerted by the flow of water through a semi permeable membrane separating two solutions with different concentrations of solute

Question 11

What are the electrolytes?

Answer 11

Sodium: High hypernaturaemia, low hypnaruraemia
Pottasium: High hyperkalaemia, low hypokalaemia
Calcium: High hypercalaemia, low hypocalaemia

Question 12

Action of co-enzymes?

Answer 12

Bind to active site with substrate, take part on reaction and are changed, recycled

Question 13

How many chromosomes in a genome?

Answer 13

46 chromosomes

Question 14

How chromosomes are made

Answer 14

Nucleosome (8 separate histone protein attached to DNA molecule), multiple nucleosome coil together + stack on top as chromatin ( a supercoil), coils again to create chromosome

Question 15

Semi conservative=

Answer 15

DNA helix splits and one new strand is added to each new half. So DNA composed of a new one and an old one.

Question 16

What does poly-A RNA do?

Answer 16

Edits the RNA removing the intron (non-coding bit0 and leaving the extron (coding section)

Question 17

Polymorphism=

Answer 17

Benign mutation

Question 18

Out-frame deletion causes

Answer 18

one base deletion, huge effect

Question 19

In-frame deletion causes

Answer 19

one codon deletion

Question 20

Non-sense deletion causes

Answer 20

a stop codon either at deletion site or later on in sequence

Question 21

Mis-sense mutation causes

Answer 21

single base substitution ( so may change type of amino acid in protein), could also just be a polymorphism

Question 22

What occurs in prometaphase ?

Answer 22

Nuclear membrane breaks down, chromosomes attach to microtubules that have invaded

Question 23

Phenotype=

Answer 23

The appearance of an individual resulting from interaction of the environment and genome.

Question 24

Genotype=

Answer 24

The genetic constitution of an individual

Question 25

What is imprinting?

Answer 25

For some genes only one of the two passed on is active, either the one from the mother or the one from the father. Dependent on which one is active in the child will depend on whether they get the condition or not e.g onlt passed from father to son means activated on Y.

Question 26

Lyonosation=

Answer 26

Turning off of one X chromosome in females.