biochemistry

the organ that acts as the coordination center of the endocrine system is the

binding substrates by multiple covalent interactions is NOT a characteristic of the active site,but

digestive enzymes such as chymotrypsin and trypsin are often synthesized as long inactive precursors known as

one of the mechanisms by which enzyme activity is regulated is for the product a metabolic pathway to be an inhibitor of an earlier enzyme-catalyzed rxn in the pathway. this type of inhibition is known as

Methanol poisoning is treated by adminitering large amounts of ethanol.Ethanol replaces methanol in the active site of alcohol dehydrogenase until the methanol can be eliminated from the body.this is an example of

A hormone that is released into the extracellular space and diffuses to nearby cells to evoke its response is classified as

Consider the elementary reaction A + B--> P. this reaction is

Enzymes catalyze rxns in the forward direction only DOES NOT describe enzymes

in general the first step in a biochemical signaling pathway is the binding of a ligand to a_______,which causes a signal to be transmitted to the interior of the cell.

a substance that binds to a receptor and evokes a response is a

stabilizes the protonated form of the base that removed the proton from the nucleophilic hydroxyl group

removes a proton from the hydroxyl group of the nucleophile to make it more nucleophilic

acts as a nucleophile to attack the carbonyl carbon atom of the scissile peptide bond

Match the coenzyme with its vitamin form:

coenzyme A

Match the coenzyme with its vitamin form:

Flavin adenine dinucleotied

Match the coenzyme with its vitamin form:

nicotinamide adenine dinucleotide

Determine the class of enzyme which catalyzes the following rxns:

Lactate dehydrogenase
catalyzes the conversion of the carbonyl group of pyruvate to a hydroxyl group to form lactate with the simultaneous conversion of NADH to NAD+

Determine the class of enzyme which catalyzes the following rxns:

Pyruvate decarboxylase
catalyzes the decarboxylation of pyruvate to form acetaldehyde and carbon dioxide

Determine the class of enzyme which catalyzes the following rxns:

Alanine transaminase
catalyzes the movement of an amino group from the amino acid L-glutamate to pyruvate to form a new amino acid L-alanine and a-ketoglutarate

Determine the class of enzyme which catalyzes the following rxns:

Chymotrypsin
catalyzes the cleavage of a protein b/t amino acids with bulky or aromatic side chains with the addition of water

Determine the class of enzyme which catalyzes the following rxns:

Pyruvate carboxylate
catalyzes the addition of carbon dioxide to pyruvate to form oxaloacetate with the hydrolysis of ATP

Determine the class of enzyme which catalyzes the following rxns:

Phosphoglycerate mutase
catalyzes the conversion of 3-phosphoglycerate to 2-phosphoglycerate