1. Most of the metabolic energy for contraction of the heart comes form
a. Oxidative metabolism of fatty acid
b. Anaerobic glycolysis of glucose
c. Ketone bodies
d. Lactic acid metabolism
e. Glycogen
Answer
correct answer
a
2.A certain substance is found to pass easily into normal cells along its concentration gradient, when poisoned with cyanide. it passes into the cells with difficulty
Which of following best describe the transport of the substance?
The neurotransmitter with only excitatory property is( Best of choice )
a. Adrenaline
b. Aspartate
c. Dopamine
d. Glycine
e. GABA
Answer
b. Aspartate
Which of following is/are characteristics of the sodium potassium pump
a. Use ATP as the energy source
b. Transports 3 sodium ions into the cell
c. transports 2 potassium ions out of the cell
d. Maintain cell osmolality
e. Maintain a voltage gradient across the cell membrane
Answer
a.T
b.F
c.F
d.T
e.T
Transport mechanisms through cell membranes which involve carrier molecule
a. Simple diffusion
b. Facilitate diffusion
c. Primary active transport
d. Secondary active transport
e. Endocytosis
Answer
a. F
b. T
c. T
d. T
e. F
2. Skeletal muscle blood flow
a) Increases with noradrenaline
b) Receives 50% of the cardiac output at rest
c) May cease during isometric contraction
d) Increases with rhythmic contraction
e) Increases with adrenaline
Answer
a. F
b. F
c. T
d. T
e. T