SfM Formative

Question 1

Energetically unfavourable reactions can only proceed because they :

Answer 1

Have negative free energy changes

Question 2

The lipid membrane surrounding eukaryotic cells does not contain:

Answer 2

Ribosomes

Question 3

The dissociation constant for water is:

Answer 3

1x10^-14 (mol/L)^2

Question 4

Amino acid sequence is described as the —– structure?

Answer 4

Primary

Question 5

An enzyme increases the rate of a spontaneous reaction by:

Answer 5

Decreasing activation energy.

Question 6

Monomers of carbohydrates are linked together by:

Answer 6

Glycosidic Bonds

Question 7

Catabolism of 1 mol of glucose to lactate generates how many moles of ATP?

Answer 7

2 NET

Question 8

Ingesting alcohol reduces which one of the following intermediates, particularly in the liver?

Answer 8

NAD+

Question 9

What is the name of the molecule that transports electrons between complexes III and IV of the electron transport chain?

Answer 9

Cytochrome C

Question 10

ATPase utilises which one of the following mechanisms in order to generate ATP?

Answer 10

Binding- change mechanism

Question 11

ATPase utilises which one of the following mechanisms in order to generate ATP?

Answer 11

Binding- change mechanism

Question 12

Which one of the following vitamins is NOT derived from a lipid?

Answer 12

Vitamin C

Question 13

Excess acetyl CoA from fatty acids gives rise to the formation of:

Answer 13

Ketones

Question 14

Which amino acid is central to nitrogen entering the body?

Answer 14

Glutamate

Question 15

Which one of the following cycles is important in nitrogen metabolism?

Answer 15

Glucose- Alanine cycles

Question 16

If a person drinks one litre of water:

Answer 16

Approximately 1/3 will enter the extracellular fluid and 2/3 will enter the intracellular fluid.

Question 17

Red blood cells will shrink if they are placed in a solution of:

Answer 17

30mM urea and 170mM NaCl

Question 18

Which of the following statements regarding epithelia is NOT correct?

Answer 18

A simple epithelium is one which contains cells of only one type.

Question 19

The permeability of the resting membrane potential is directly generated by:

Answer 19

The permeability of the resting membrane to K+

Question 20

Which of the following is NOT an example of a graded potential?

Answer 20

Action potential.

Question 21

The end-plate potential:

Answer 21

Is always large enough to evoke an action potential in the muscle.

Question 22

The thick filaments of skeletal muscle are composed of:

Answer 22

Myosin

Question 23

Contraction of skeletal muscle requires the:

Answer 23

Release of Ca 2+ from the sarcoplasmic reticulum.

Question 24

An antagonist at a pharmalogical receptor will have:

Answer 24

A high affinity and low efficacy

Question 25

In the sympathetic nervous system:

Answer 25

Spinal out flow is throaco-lumbar

Question 26

Activation of the parasympathetic system causes:

Answer 26

An increase in gut motility

Question 27

Which of the following drugs does NOT block transmission at the neuromuscular junction?

Answer 27

Neostigmine

Question 28

The physiological significance of co-activation of alpha and gamma motor neurones innervating skeletal muscle is that it ensures:

Answer 28

The sensitivity of the muscle spindle is retained.

Question 29

Golgi tendon organs are stimulated by:

Answer 29

Increased tension and cause relaxation of the muscle.

Question 30

Viral infection would typically cause elevated levels of which blood cell type.

Answer 30

Lymphocytes