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11th Biology Monthly Test - 2 ( Bio - Zoology - Excretion )

MABS Institution

11th Biology Monthly Test - 2 ( Bio - Zoology - Excretion )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Countercurrent multiplier mechanism is possible because of the presence of_______________

Nephron
Collecting duct
Bowman's Capsule
Henle's Loop

Animal requiring minimum amount of water to produce urine are

ureotelic
ammonotelic
uricotelic
chemotelic

The hormone which helps in the reabsorption of water in kidney tubules is

cholecystokinin
angiotensin II
antidiuretic hormone
Pancreozymin

____________is not a waste product.

Guanine
Creatinine
Urea
Ribose

The ureter, blood vessels enter the kidney through_____________

Hilum
Renal columns of Bertini
Hilus
Renal pelvis

The end product of Ornithine cycle is

carbon dioxide
uric acid
urea
ammonia

Glomerular filtrate contains

Blood without blood cells and proteins
Plasma without sugar
Blood with proteins but without cells
Blood without urea

Podocytes are the cells present on the

Outer wall of Bowman's capsule
Inner wall of Bowman's capsule
Neck of nephron
Wall glomerular capillaries

Aldosterone acts at the distal convoluted tubule and collecting duct resulting in the absorption of water through

Aquaporins
Spectrins
GLUT
Chloride channels

________________is not a symptom of glomerulonephritis.

Hypertension
Haematuria
Proteinuria
Renal colic pain

Part - B

Generic 2 - Answer All Question

Write the name of the cycle which converts amino acid to urea?

What vessels carry blood to the kidneys? Is this blood arterial or venous?

Why is the urine yellow in colour?

What evolutionary hypothesis could explain the heart's role in secreting a hormone that regulates renal function? What hormone is this?

Which is acting as a water permeable channels in Nephron?

Can acute renal failures corrected by kidney transplantation?

What is peculiar about excretion in earthworms

Part - C

Generic 3 - Answer All Question

Differentiate acute and chronic Renal failure.

Match the following terms.
(a) \(\alpha \) -receptor - Afferent arteriole
(b) Autoregulation - Basal lamina
(c) Bowman's capsule - Capillary blood pressure
(d) Capsule fluid pressure - Colloid osmotic Pressure
(e) Glomerulus - GFR
(f) Podocyte - JG cells
(g) Vasoconstriction - Plasma proteins

How is urea formed in the human body?

If the afferent arteriole of the nephron constricts, what happens to the GFR in that nephron? If the efferent arteriole constricts what happens to the GFR in that nephron? Assume that no auto regulation takes place.

Match each of the following substances. with its mode of transportation in proximal tubular reabsorption.
(a) Na+ - Simple diffusion
(b) Glucose - Primary active transport
(c) Urea - Indirect active transport
(d) Plasma - Paracellular movement
(e) Proteins - Facilitated diffusion
(f) Water - Endocytosis

Differentiate protonephridia from metanephridia

Which segment is the site of secretion and regulated reabsorption of ions and pH homeostasis?

Part - D

Generic 5 - Answer All Question

What is tubular secretion? Name the substances secreted through the renal tubules.

Write a note on
a) Uremia b) Renal Calculi

Malfunctioning of the kidneys can be treated by haemodialysis? Explain.

What is the function of antidiuretic hormone? Where is it produced and what stimuli increases or decreases its secretion?

Explain the tubular reabsorption process of urine formation.
Arrange the following structures in the order that a drop of water entering the nephron would encounter them
(a) Afferent arteriole
(b) Bowman's capsule
(c) Collecting duct
(d) Distal tubule
(e) Glomerulus
(f) Loop of Henle
(g) Proximal tubule
(h) Renal pelvis

Write a note on a) Uremia b) Renal Calculi

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