VR CLASSES FOR JEE / MEDICAL
DPP – 3
BIOLOGY
1.
Total Qun. – 30
The ability of producing concentrated (hyperosmotic) urine in vertebrates generally depends on
(1) area of Bowman’s capsule epithelium
(2) length of the proximal convoluted tubule
(3) length of Henle’s loop
(4) capillary network forming glomerulus
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Distal convoluted tubule is permeable to :
(1) Na+ ions
(2) K+ ions
(3) Cl– ions
(4) all of the above
The loop of Henle is found in the kidneys of :
[PCS 2000]
(1) birds and mammals (2) fishes and birds
(3) fishes and mammals
(4) amphibians and mammals
Which one of the following organs of vertebrates contain mesothelial cells ?
(1) Testis
(2) Brain
(3) Kidney
(4) Ovary
Haemodialysis is associated with ]
(1) Liver
(2) spleen
(3) kidney
(4) stomach
Reabsorption of water in distal parts of kidney tubules/urine formation is controlled by (1) relaxin
(2) calcitonin
(3) oxytocin
(4) vasopressin
Diuresis is a condition characterized by :
(1) increase in urine volume
(2) increased glucose excretion
(3) decrease in urine volume
(4) decrease in electrolyte balance
Kidney of the adult frog is :
(1) Pronephros
(2) Mesonephros
(3) Holonephros
(4) Metanephros
The elimination of urea is termed as :
(1) ureotelism
(2) ammonotelism
(3) urecotelism
(4) none of the above
The filterate form the glomerulus contains :
(1) urea, uric acid, ammonia and water
(2) urea and uric acid only
(3) urea, uric acid and water
(4) urea, uric acid, glucose and water
Urea in the body of animals is formed as a result of :
(1) deamination of amino acids
(2) oxidation of glucose
(3) hydrolysis of fats
(4) emulsification of fats
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Nephron is concerned with :
(1) Uterus
(2) Urethra
(3) Vestibule
(4) Ureter
Healthy human does not excrete out in his urine:
(1) Uric acid
(2) Alanine
(3) Creatinine
(4) B-complex vitamins
Which type of kidneys are found in amphibian?
(1) Holonephric
(2) Mesonephric
(3) Pronephric
(4) Metanephric
Which one of the following body functions is not performed by kidneys ?
(1) Excretion
(2) Osmoregulation
(3) Regulation of blood volume
(4) Destruction of dead blood corpuscles
If Henle's loop were absent from mannalian nephron, which of the is to be expected ?
2003]
(1) The urine will be more dilute
(2) There will be no urine formation
(3) The urine will have more concentration
(4) There will be hardly any change in the quality and quantity of urine formed.
Kindey stones are(1) crystals of silica
(2) crystals of calcium oxalate
(3) crystals of potassium chloride
(4) crystals of sodium bicarbonate
Dialysis is done in the condition when person is suffering from :
(1) diabetes
(2) uremia
(3) polyuria
(4) haemoptysis
A terrestrial animal must be able to :
(1) conserve water
(2) excrete large amounts of salts in urine
(3) excrete large amounts of water in urine
(4) actively pump salts out through the skin
The presence of arginase confirms that :
(1) urea cycle is operating
(2) urea cycle may be operating
(3) arginine is being converted into ornithines
(4) arginine is being converted into citrulline
Glomerular filtrate contains :
(1) blood without blood cells and proteins
(2) blood with proteins but without cells
(3) plasma without sugar
(4) blood without urea
Urea is directly produced in mammals from:
(1) ammonia released by oxidative deamination
[CBSE
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(2) oxidative deamination of purines
(3) breakdown of ornithine
(4) breakdown of arginine
Glomerular hydrostatic pressure is present in :
(1) Tublule of kidney
(2) Bowman's capsule
(3) Malpighian tubule
(4) Glomerulus of uriniferous tubule
Angiotensinogen is a protein produced and secreted by(1) Juxtaglomerular (JG) cells
(2) Macula densa cells
(3) Endothelial cells (cells lining the blood vessels)
(4) Liver cells
A person who is on a long hunger strike and is surviving only on water, will have(1) less amino acids in his urine
(2) more glucose in his blood
(3) less urea in his urine
(4) more sodium in his urine
Excretory product in mammals is(1) Urea
(2) Uric acid
(3) Ammonia
(4) None
Final excretion in urine of which substance is:
(1) amino acid
(2) urea
(3) glucose and glycogen (4) uric acid
Structural and function unit of kidney is :
(1) nephrone
(2) efferent arteriole
(3) glomerulus
(4) neuron
Urea is synthesized in :
(1) liver
(2) intestine
(3) stomach
(4) kidney
Reabsorption of chloride ions (Cl–) from the glomerular filtrate in the kidney tubule of mammal is
carries out by :
(1) Osmosis
(2) Active transport
(3) Diffusion
(4) Brownian movement