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Flashcards in Mock Failures Deck (32):
1

What's the difference between vaccination and immunisation?

Vaccination involves injection of antigenic material
Immunisation process of developing immunity

2

When you listen to a human heartbeat through a stethoscope you can hear a two stage "lub dub"
Which causes the following causes the first lub component?

The sound of blood rushing into the atria

3

Zinc ions are necessary for enzyme carbonic anhydride to work
Which statement correctly describes the nature and function of zinc ions in their interaction with carbonic anhydrase?

Inorganic ions and prosthetic groups

4

Which volume would you use to estimate the volume of a neutrophil?

4/3*Pi*r^2

5

Describe correct sequence of organelles involved in production and secretion of a protein from this cell?

Nucleus
Golgi appartus
Vesicle
Cell membrane

6

Describe mechanism behind water movement between plasma and tissue fluid at Venules end of capillary?

The oncotic pressure is greater than the hydrostatic pressure so water moves into the capillary

7

From where to where on the graph do you calculate oxygen consumption in the experiment?

From beginning to end

8

Formula of saturated fatty acid?

CH3(CH2)n–CO2H

9

Saturated means

No double bonds

10

Chemical produced by metabolic pathway binds to initial enzyme in pathway. Chemical bonds to enzyme at site away from active site and inhibits enzyme action.
Mode of action of chemical?

End product inhibitor
Bonds to the allosterid site of the enzyme

11

True or false
At endodermis water had to enter the symplast pathway

True

12

True or false?
Casparian strips in endodermis contain chemical lignin?

False

13

True or false
Most of water moves across root cortex by the apoplast pathway?

True

14

Guard cells adapted to role how?

Uneven thickened cell wall
Able to bend/change shape
Transport proteins in plasma membrane
Chloroplasts provide energy

15

Other than stomata name one other part of leave from which water may be lost

Endodermis
Guard cell
Cuticle

16

Diffusion water?

Osmosis

17

Plasma membrane is?

Partially permeable

18

If all water lost from leaf cell is not replaced, they lose... And the leaf may wilt

Turgidity

19

Cohesion tension theory
Use theory to explain how water moves from roots to leaves?

Evaporation at top
Creates tension in xylem
Water molecules cohesive/ attracted together/pulled up

20

Yeast means of cell division?

Budding

21

Animal plant yeast bacterium who has nucleus?

Animal-nucleus
Plant- nucleus
Yeast-nucleus
Bacterium- no nucleus

22

Material in cell wall bacterium?

Peptidoglycan

23

Presence of ribosomes animal plant yeast bacterium

Animal- ribosomes present
Plant- no ribosomes present
Yeast- ribosomes present
Bacterium- no ribosomes present

24

Explain How alveoli create a surface for efficient gaseous exchange?

One cell thick-diffusion
Squamous cells
Elastic-can recoil to help with ventilation
Good concentration gradient
Large surface area
Small- surface area to volume ratio
Surfactant

25

Describe effect of high temperature in structure of the yeast cell membranes

1) phospholipids vibrate more
2) increases gaps in phospholipids
3) bilayer more fluid
4) more kinetic energy
5) denatured

26

Then what
SA node generates electrical signals

Walls of atria contract

27

Then what
Atrioventricular node recurred electrical signal from SA node?

Electrical signals transmitted down septum

28

Then what
Ventricle walls start to contract

Atrioventricular valves close

29

Then what
Ventricles walls relax

Seimilunar valves close

30

Young mammals receive antibodies in their mothers milk
What type of immunity is it?

Natural passive immunity

31

Suggest and explain what effects super ventricular tachycardia might have on blood flow from the heart?

Less blood leaves the heart
Ventricles don't have time to fill before contaction
Inefficient

32

Suggest why the foramen ovale is open in the fetus before birth?

Lungs don't function blood not oxygenated
Therefore single circularity
Little blood goes to the lungs