Ethanol (CH3CH2OH) is the alcohol found in beverages. It is oxidized in the body to acetaldehyde by the enzyme alcohol dehydrogenase. Methanol (CH3OH), also known as wood alcohol, is converted to formaldehyde by the same enzyme. Acetaldehyde is toxic, but formaldehyde is far more toxic to humans, which is why the ingestion of relatively small amounts of methanol can cause blindness or death. One treatment for mild methanol poisoning is the administration of ethanol. Why might a doctor choose this treatment?

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#Question id: 12513

#Unit 7. System Physiology – Animal

A 26-year-old construction worker is brought to the emergency room with a change in mental status after working a 10-hour shift on a hot summer day (average outside temperature was 97°F). The man had been sweating profusely during the day but did not drink fluids. He has a fever of 102°F, heart rate of 140 beats/min, and blood pressure of 100/55 mm Hg in the supine position. On examination, he has no perspiration, appears to have dry mucous membranes, and is poorly oriented to person, place, and time. Assuming that his kidneys were normal yesterday, which of the following sets of hormone levels describes his condition, compared with normal?

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#Question id: 12514

#Unit 7. System Physiology – Animal

Acute metabolic acidosis tends to _____ in intracellular K+ concentration and _____ in K+ secretion by the cortical collecting tubules.

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#Question id: 12515

#Unit 6. System Physiology – Plant

The most widely used techniques allows detection of as little as 10^13 g ABA by

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#Question id: 12516

#Unit 6. System Physiology – Plant

ABA Is Synthesized from a Carotenoid Intermediate is takes place in___

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#Question id: 12517

#Unit 6. System Physiology – Plant

Synthesis of violaxanthin is catalyzed by an enzyme known as__

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#Question id: 12518

#Unit 6. System Physiology – Plant

ABA inactivation by oxidation and by the conjugation process such as

a) ABA inactivation by oxidation with monosaccharides ABA-β-D-glucose ester

b) ABA inactivation by conjugation with monosaccharides ABA-β-D-glucose ester

c) ABA inactivation by oxidation into Phaseic acid

d) ABA inactivation by conjugation  by oxidation into Phaseic acid

Which of the following combination from the given above statements about conjugation and oxidation process