DETOXIFICATION OF XENOBIOTICS OFTEN OCCURS VIA INTRODUCTION OF AN OXYGEN ATOM INTO THE SUBSTRATE MOLECULE. THIS HYDROXYLATION PROCESS OCCURS BY:
Anonymous Quiz
4%
CYTOCHROME C
84%
CKTOCHROME P-450
13%
CYTOCHROME OXIDASE
0%
CYTOCHROME
STOOL TEST DETECTS IN THE PATIENTS FECES A LARGE AMOUNT OF UNDIGESTED FATS. THIS PATIENT IS THE MOST LIKELY TO HAVE STEATORRHEA THAT IS CAUSED BY DECREASED SECRETION OF THE FOLLOWING ENZYMES :
Anonymous Quiz
98%
PANCREATIC LIPASE
2%
PANCREATIC AMYLASE
0%
PANCREATIC PROTEASE
0%
PANCREATIC PHOSPHOLIPASE
A NEWBORN DEVELOPS ABDOMINAL PAIN, BLOATING AND DIARRHEA AFTER MILK FEEDING. THE NEWBORN HAS DECREASED ACTIVITY OF WHICH THE FOLLOWING ENZYMES?
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95%
LACTASE
2%
INVERTASE
3%
MALTASE
0%
AMYLASE
Primary active transport:
Anonymous Quiz
2%
Occurs with concentration gradient.
98%
Needs ATP.
0%
Doesn't need carrier.
0%
Doesn't occur in normal kidney.
67% of the filtered load of Na+ is reabsorbed by:
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0%
Distal convoluted tubule.
2%
Loop of Henle.
96%
Proximal convoluted tubule.
2%
Collecting duct.
Co-transport of one Na+, one K+, and two Cl- occurs in:
Anonymous Quiz
92%
Thick ascending segment of loop of Henle.
8%
Thin ascending segment of loop of Henle.
0%
Thin descending segment of loop of Henle.
0%
Proximal convoluted tubule.
Na+ is actively reabsorbed out of all portions of the renal tubule except:
Anonymous Quiz
0%
Thick ascending segment of loop of Henle.
19%
Thin ascending segment of loop of Henle.
81%
Thin descending segment of loop of Henle.
0%
Proximal convoluted tubule.
Na+ is reabsorbed by co-transport along with glucose in:
Anonymous Poll
6%
Thick ascending segment of loop of Henle.
0%
Thin ascending segment of loop of Henle.
0%
Late part of proximal convoluted tubule.
94%
1st part of proximal convoluted tubule
Reabsorption of Na+ is controlled by aldosterone in:
Anonymous Quiz
94%
Late distal convoluted tubule and collecting duct.
2%
Thin ascending segment of loop of Henle
2%
Thin descending segment of loop of Henle.
2%
Proximal convoluted tubule.
Which of the following hormone increases sodium excretion in urine:
Anonymous Quiz
6%
Aldosterone
94%
Atrial natriuretic peptide.
0%
Sex hormones
0%
Glucocorticoids
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Regarding permeability of the glomerular membrane, all of the following is true, EXCEPT:
Anonymous Quiz
14%
it is inversely proportional to the diameter of the penetrating molecules.
63%
to albumin is more than expected by because albumin carries negative charge
15%
to cationic molecules is greater than the permeability to neutral ones having the same diameter
9%
is affected by charge lining the capillary endothelium.
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Which of the following would cause an increase in glomerular filtration rate(GFR)?
Anonymous Quiz
6%
hyperproteinemia
92%
dilation of afferent arteriole
0%
dilation of efferent arteriole
1%
stone in the ureter
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The juxtamedullary nephrons:
Anonymous Quiz
1%
constitute about 40% of nephrons in human kidney.
9%
its proximal and distal convoluted tubules are present in medulla
9%
its blood flow is about 20% of the total blood flow in human kidney..
80%
have vasa recta that acts as a countercurrent exchange system.
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Filtration of plasma proteins in nephron is prevented by:
Anonymous Quiz
1%
The strong negative electrical charges present in podocytes
1%
Capillary endothelium which acts as a major barrier for plasma proteins.
96%
The strong negative electrical charges present in basement membrane.
1%
Pseudopodia of podocyte which acts as a physiological barrier.