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 Multiple Choice QuestionsMultiple Choice Questions

1.

Which of the following amino acids are present in ornithine cycle

  • Valine and cystine

  • Arginine and citrulline

  • Glycine and methionine

  • None of these


2.

A person passes much urine and drinks much water but his blood glucose level is normal. This condition may be the result of:

  • a reduction in insulin secretion from pancreas

  • a reduction in vasopressin secretion from posterior pituitary

  • a fall in the glucose concentration in urine

  • an increase in secretion of glucagon


3.

Glomerular filtrate is

  • blood minus blood corpuscles and plasma protein

  • blood minus corpuscles

  • mixture of water, ammonia and corpuscles

  • urine


4.

Assertion : Phenylketonuria is a disease in which excretion of phenylalanine occurs in urine. 

Reason : It is due to dietary imbalance.

  • If both Assertion and Reason are true and Reason is the correct explantion of Assertion

  • If both Assertion and Reason are true and Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If Assertion is false but Reason is true


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5.

Haemodialysis helps in patient having

  • uremia

  • anaemia

  • diabetes

  • goitre


6.

In living beings ammonia is converted into urea through

  • ornithine cycle

  • citrulline cycle

  • fumarine cycle

  • arginine cycle


7.

X- rays are used in 

  • ECG

  • EEG

  • CT- scan

  • Endoscopy


8.

The ornithine cycle removes two waste products from the blood in liver. These products are

  • CO2 and urea

  • ammonia and urea

  • CO2 and ammonia

  • ammonia and uric acid


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9.

Which of the following are uricotelic animals?

  • Rohu and frog

  • Camel and frog

  • Lizard and crow

  • Earthworm and eagle


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10.

ADH controls water permeability of

  • collecting tube

  • proximal convoluted tubules

  • distal convoluted tubules

  • all of the above


C.

distal convoluted tubules

The vasopressin hormone, secreted by neurohypophysis of pituitary gland promotes the reabsorption of water from the distal convoluted tubules of nephrons, reducing excretion of water in urine (diuresis). Hence, it is called Antidiuretic Hormone (ADH). Its release in blood is controlled by an 'osmoregulatory centre' located in hypothalamus. Hyposecretion of ADH causes diabetes incipidus.


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