Q. The affinity of an enzyme for its substrate, when the enzyme has a Km of 0.50 M will be __________ than the affinity of an enzyme for its substrate when the enzyme has a Km of 0.05 M.

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Q. Anthranilate synthase, the first enzyme of tryptophan biosynthesis after the branch point shows feedback inhibition and repression due to

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Q. A substrate binds to its enzyme at a location called the __________ site.

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Q. Hydrogen and oxygen release enormous amounts of energy when they react. Yet, hydrogen and oxygen can be mixed together in a balloon and nothing will happen. Why?

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Q. Adenosine triphosphate is a type of

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Q. An enzyme that is always produced, regardless of the presence of substrates or the end products, is called

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Q. About 7.3 kcal/mole are released when

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Q. The ability of CTP to bind to aspartate carbamoyltransferase and shut down the synthesis of more CTP is an example of

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Q. Oxidation is the

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Q. Denaturation of an enzyme refers to the

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Q. The class of immunoglobulins which can cross the placenta is

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Q. Self reactive antibodies are not found in significant concentration in normal serum because

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Q. Simulation of which of the following will lead to appearance of first antibody to appear following stimulation by an antigen?

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Q. Antigen binding sites of an immunoglobulin are located in

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Q. Which of the following mediates Type I hypersensitivity reaction?

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Q. Which of the following theory of antibody production is most widely accepted?

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Q. Which is the most efficient complement fixing class of antibody?

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Q. The class of immunoglobulin, most abundant in body is

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Q. Which is not a function of IgG?

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Q. J chain is present in

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