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 Multiple Choice QuestionsMultiple Choice Questions

1.

In mammals, which blood vessel would normally carry largest amount of urea?

  • Dorsal aorta

  • Hepatic vein

  • Hepatic portal vein

  • Hepatic portal vein

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2.

The figure shows a human urinary system with structure labelled A to D. Select option, which correctly identifies them and gives their characteristics and of function.


  • A - adrenal gland - located at the anterior part of kidney. Secrete catecholamines, which stimulate glycogen breakdown

  • B- pelvis -board funnel-shaped space inner to hilum, directly connected to loops of Henle

  • C - mediulla-inner zone of kidney and contains complete nephrons.

  • C - mediulla-inner zone of kidney and contains complete nephrons.


A.

A - adrenal gland - located at the anterior part of kidney. Secrete catecholamines, which stimulate glycogen breakdown

A - adrenal gland, B - Renal pelvis, C - Medulla, D - cortex.

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3.

Human urine is usually acidic because

  • The sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.

  • Excreted plasma proteins are acidic

  • potassium and sodium exchange generates acidity

  • potassium and sodium exchange generates acidity

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4.

The maximum amount of electrolytes and water (70-80 percent from the glomerular filtrate is reabsorbed in which part of the nephron?

  • Ascending limb of loop of Henle

  • Distal convoluted tubule

  • Proximal convoluted tubule

  • Proximal convoluted tubule

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5.

Choose the correctly matched pair.

  • Inner Lining of salivary ducts - Ciliated epithelium

  • Moist surface of buccal cavity - Flandular epithelium

  • Tubular parts of nephrons - Cuboidal epithelium

  • Tubular parts of nephrons - Cuboidal epithelium

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6.

Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?

  • Increase in aldosterone levels

  • Increase in antidiuretic hormone levels

  • Decrease in aldosterone levels

  • Decrease in aldosterone levels

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7.

Which one of the following options gives the correct categorisation of six animals according to the type of nitrogenous wastes (A, B, C), they give out?

  • A
    Ammonotelic
    B
    Ureotelic
    C
    Uricotelic
    Pigeon, Humans Aquatic Amphibia, Lizards Cockroach, Frog
  • A
    Ammonotelic
    B
    Ureotelic
    C
    Uricotelic
    Frog, Lizards Aquatic Amphibia, Humans Cockroach, Pigeon
  • A
    Ammonotelic
    B
    Ureotelic
    C
    Uricotelic
    Aquatic Amphibia Frog, Humans Pigeon, Lizards, Cockroach

  • A
    Ammonotelic
    B
    Ureotelic
    C
    Uricotelic
    Aquatic Amphibia Frog, Humans Pigeon, Lizards, Cockroach

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8.

A fall in glomeruclar filtration rat (GFR) activates

  • Juxtra glomerular cells to release renin

  • Adrenal cortex to release aldosterone

  • Adrenal medulla to release adrenaline

  • Adrenal medulla to release adrenaline

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9.

Which one of the following characteristics is common both in humans and adult frogs?

  • Four chambered heart

  • Internal fertilisation

  • Nucleated RBCs

  • Nucleated RBCs

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10.

Removal of proximal convoluted tubule from the nephron will result in

  • more diluted urine

  • more concentrated urine
  • no change in quality and quantity of urine

  • no change in quality and quantity of urine

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