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TLS Online TPP Program

#Question id: 11939

Which of the following would cause the greatest degree of hyperkalemia?

#Unit 7. System Physiology – Animal
  1. Increase in potassium intake from 60 to 180 mmol/day in a person with normal kidneys and a normal aldosterone system
  2. Chronic treatment with a diuretic that inhibits the action of aldosterone
  3. Decrease in sodium intake from 200 to 100 mmol/day
  4. Chronic treatment with a diuretic that inhibits loop of Henle Na+-2Cl−-K+ co-transport
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TLS Online TPP Program

#Question id: 30114

#Unit 1. Molecules and their Interaction Relevant to Biology

In the case of monoclonal antibody production by hybridoma technology, myeloma cells used lack the enzyme hypxanthine - guanine phosphoriboxyl transferase(HGPRT) such that fused cells can only survive when selected on hypoxanthine-aminopterinthymdine (HAT). What is the role of aminopterin in this medium?
TLS Online TPP Program

#Question id: 30115

#Unit 1. Molecules and their Interaction Relevant to Biology

The antibacterial trimethoprim is an inhibitor of 
TLS Online TPP Program

#Question id: 30115

#Unit 1. Molecules and their Interaction Relevant to Biology

The antibacterial trimethoprim is an inhibitor of 
TLS Online TPP Program

#Question id: 30116

#Unit 1. Molecules and their Interaction Relevant to Biology

During purine synthesis the activity of amidotransferase enzyme is inhibited by the antitumor agent, mark the correct one.
TLS Online TPP Program

#Question id: 30117

#Unit 1. Molecules and their Interaction Relevant to Biology

Catabolic end product of purines is
TLS Online TPP Program

#Question id: 30118

#Unit 1. Molecules and their Interaction Relevant to Biology

The following enzymes are involved in the catabolism of AMP to uric acid. The correct order of their use is:

1. A deaminase
2. A nucleoside phosphorylase
3. A nucleotidase
4. Xanthine oxidase