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Hi there, I am having some trouble with some toxicology questions I was wonderin

ID: 196574 • Letter: H

Question

Hi there, I am having some trouble with some toxicology questions I was wondering if I could get any reassurance on the answers I think they are.

10. The highest concentration of CYP450 enzyme in the liver are found in:

A) Zone 1

B) Zone 2

>C) Zone 3

D) Zone 4

11. The reactive intermediate formed when acetaminophen undergoes Phase I metabolism is:

>A) NAPQI

B) Isoniazid

C) CYP2E1

D) APAP

12. Vinyl chloride causes a rare form of liver tumor called:

A) Cirrhosis

B) Hepatocellular carcinoma

>C) Haemangiosarcoma

D) Centrilobular hepatic necrosis

13. The following enzyme is not measured in the serum as an in vivo indicator of liver damage:

A) ALT

>B) NAPQI

C) AST

D) LDH

14. Which segment of the nephron is the major site of action for nephrotoxicants?

A) glomerulus

B) loop of Henle

>C) proximal tubule

D) collecting duct

15. Damage to podocytes may cause which of the following effects:

A) oliguria

B) acidosis

C) vasoconstriction

>D) proteinuria

E) vasodilation

16. Metallothioneins do NOT bind which of the following:

>A) chloride

B) copper

C) gold

D) mercury

E) cadmium

17. Vasoconstriction of afferent arterioles leads to:

A) increased GFR

B) atherosclerosis

C) proteinuria

>D) decreased GFR

E) polyuria

18. The primary lesion in analgesic nephropathy is:

A) glomerular capillary vasoconstriction

B) increased podocyte filtration slit size

C) brush border apoptosis

>D) papillary necrosis

E) none of the above

19. Chromium damages the proximal convoluted tubule, which results in:

A) increased organic anion secretion

>B) decreased organic anion secretion

>C) decreased glucose reabsorption

D) increased glucose reabsorption

E) increased sodium reabsorption

20. GFR can be measured directly by determining clearance of:

A) insulin

>B) creatinine

C) sodium

D) potassium

E) all of the above

Explanation / Answer

10. The highest concentration of CYP450 enzyme in the liver are found in
Correct option:
C) Zone 3
11. The reactive intermediate formed when acetaminophen undergoes Phase I
Correct option:
A) NAPQI
12. Vinyl chloride causes a rare form of liver tumor called
Correct option:
C) Haemangiosarcoma
13. The following enzyme is not measured in the serum as an in vivo indicator of liver damage:
correct option:
B) NAPQI
14. Which segment of the nephron is the major site of action for nephrotoxicants?
Correct option:
C) proximal tubule
15. Damage to podocytes may cause which of the following effects:
Correct option:
D) proteinuria
16. Metallothioneins do NOT bind which of the following:
Correct option:
A) chloride
17. Vasoconstriction of afferent arterioles leads to:
Correct option:
D) decreased GFR
18. The primary lesion in analgesic nephropathy is:
Correct option:
D) papillary necrosis
19. Chromium damages the proximal convoluted tubule, which results in:
Correct option:
C) decreased glucose reabsorption
20. GFR can be measured directly by determining clearance of
Correct option;
B) creatinine

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