The process of cellular respiration involves breaking down g…
The process of cellular respiration involves breaking down glucose to produce ATP, carbon dioxide, and water. This reaction releases a large amount of energy that is harnessed by the cell. How would this overall reaction be classified?
Read DetailsDuring muscle contraction, the protein filaments actin and m…
During muscle contraction, the protein filaments actin and myosin slide past each other, causing the muscle fiber to shorten. This movement is a direct result of the chemical energy from ATP being converted into the ______ energy of this movement.
Read DetailsJasmine is evaluating two potential projects for her company…
Jasmine is evaluating two potential projects for her company. Project A requires an initial investment of $50,000 and is expected to generate $10,000 annually for 7 years. Project B requires an initial investment of $60,000 and will generate $20,000 annually for 4 years. Jasmine wants to choose the project that is expected to earn the highest rate of return, based on the cash flow forecasts. Which decision rule is Jasmine using?
Read DetailsIn the process of blood clotting, thrombin, a serine proteas…
In the process of blood clotting, thrombin, a serine protease, converts the soluble protein fibrinogen into insoluble fibrin strands, which form the clot. Which of the following correctly identifies the enzyme, its substrate, and the product of this reaction?
Read DetailsOrganisms are highly organized and complex, maintaining a st…
Organisms are highly organized and complex, maintaining a state of low entropy within their bodies. According to the second law of thermodynamics, which states that the entropy of the universe is always increasing, how is this maintenance of order possible for a living organism?
Read DetailsWhen ethanol (alcohol) is consumed, the body detoxifies it b…
When ethanol (alcohol) is consumed, the body detoxifies it by first breaking it down to acetaldehyde, a toxic carcinogen, and then converting the acetaldehyde into acetate, which is further broken down and eliminated. Acetaldehyde binds to the active site of the enzyme acetaldehyde dehydrogenase (ALDH2 in humans). The medication disulfiram binds to a different site on the enzyme ALDH2, changing its shape and preventing acetaldehyde from binding. This causes a buildup of acetaldehyde at even low levels of alcohol consumption, leading rapidly to symptoms of a hangover including flushing, headache, nausea, sweating, and vomiting, among others. By producing such an acute sensitivity to drinking alcohol, disulfiram has been used as a medication to treat chronic alcoholism. Given that it binds to a different site than acetaldehyde on ALDH2, disulfiram is an example of what kind of inhibitor?
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