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4

Urea is transported by

A. WBC

B. RBC

C. Blood

D. Plasma

Correct Answer :

D. Plasma


Related Questions

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The blood leaves the glomerulus by

A. afferent arteriole

B. efferent arteriole

C. renal artery

D. renal veins

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4

The final concentration of the fluid to produce a markedly hypertonic urine takes place in the

A. loop of Henle

B. distal convoluted tubule

C. collecting tubule

D. both (a) and (b)

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4

In which animal, the excretory substance is ammonia?

A. Camel

B. Cartilaginous fish

C. Whale

D. Fresh water fish

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4

The normal glomerular filtration rate in man is

A. 125 ml/minute

B. 250 ml/minute

C. 500 ml /minute

D. 1200 ml/minute

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The plasma resembles in its composition with the filtrate produced in the glomerulus except for the presence of

A. chlorides

B. amino acids

C. glucose

D. none of these

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4

The least toxic nitrogenous waste is

A. ammonia

B. uric acid

C. urea

D. both (a) and (c)

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Malpighian bodies are found in

A. kidney of vertebrates and is involved in ultrafiltration

B. kidney of vertebrates and is involved in passive filtration

C. kidney of vertebrates and is involved in selective reabsorption

D. insects and involved in excretion

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Loop of Henle is concerned with

A. excretory system

B. reproductive system

C. nervous system

D. muscular system

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In the kidneys of rabbit, the loops of Henle are found in

A. medulla

B. cortex

C. pelvic

D. pyramid

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Liquid part of blood having undergone ultrafiltration from the glomerulus and reaching the Bowman's capsule normally would not contain

A. glucose

B. sodium chloride

C. creatinine

D. albumin

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Of the 180 litres of glomerular filtrate produced each day the amount of reab-sorption is

A. 96 per cent

B. 80 per cent

C. 95 per cent

D. 99 per cent

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4

The plasma passing through the glomerulus loses about

A. 50% of its volume as filtrate

B. 20% of its volume as filtrate

C. 80% of its volume as filtrate

D. 40% of its volume as filtrate

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4

Columns of Bertini in the kidneys of mammals are formed as extension of

A. medulla into pelvis

B. medulla into cortex

C. cortex into medulla

D. pelvis into ureter

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Diuresis is the condition in which

A. the excretion of volume of urine increases

B. the excretion of volume of urine decreases

C. the kidneys fail to excrete urine

D. the water balance of blood is disturbed

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Kidneys' function is to

A. remove metabolic wastes from the body

B. maintain a constant fluid environment

C. maintain pH of body fluids

D. all of these

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The highest concentration of urea is found in

A. renal vein

B. hepatic portal vein

C. dorsal aorta

D. hepatic vein

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In man, the kidneys are

A. pronephric

B. mesonephrk:

C. metanephric

D. all types

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The loop of Henle is poorly developed or absent in............as it is concerned with reabsorption of water.

A. desert mouse

B. carnivorous bird

C. fish

D. snake

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The liquid which collects in the cavity of Bowman's capsule is

A. concentrated urine

B. blood plasma minus blood proteins

C. a solution containing excretory wastes

D. a solution containing wastes

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4

The hormone which converts angioten-sinogen to angiotensin is

A. angio tensinase

B. renin

C. rennin

D. none of these

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Separation of amino acid into amino and carboxyl group is known as

A. deamination

B. excretion

C. animation

D. egestkxi

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4

In the kidneys, the pressure gradient or the effective filtration pressure (E.F.P.) is determined by

A. glomerullar hydrostatic pressure

B. capsular hydrostatic pressure

C. blood colloidal osmotic pressure

D. all of these

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4

Urea is transported by

A. WBC

B. RBC

C. Blood

D. Plasma

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4

Which of these are uricotelic ?

A. Monkey

B. Lizard

C. Fish

D. Frog

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When urine is allowed to stand, it gives strong ammoniacal odour, due to

A. conversion of urea to ammonia via ornithinearginine cycle

B. conversion of urea to ammonia by bacteria

C. conversion of urea and uric acid to ammonia

D. none of these

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4

Liquid which collects in the cavity of Bowman's capsule is

A. concentrated urine

B. plasma minus blood proteins

C. glycogen and water

D. sulphates and water

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4

In which part of the excretory system of a mammal can you first use the term urine for the fluid it contains?

A. Bowman's capsule

B. Loop of Henle

C. Collecting tubule

D. Urinary bladder

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Under normal conditions which one is completely reabsorbed in the renal tubule?

A. Urea

B. Uric acid

C. Salts

D. Glucose

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In kidney, glucose is mainly absorbed by

A. Bowman's capsule

B. Loop of Henle

C. Proximal convoluted tubule

D. Distal convoluted tubule

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Birds and reptiles excrete their nitrogenous waste in the form of

A. uric acid and urea

B. urea

C. urea and uric acid respectively

D. uric acid