Nbme Biochemistry Shelf Study Guide Questions And Correct Answers

What can inhibit the release of prolactin? {Ans: Dopamine}What is significant about glucokinase? {Ans: K_m is above fasting concentration, V_max is very high}def in medium-chain acyl CoA dehydrogenase {Ans: results in many short-chain dicarboxylic acids from omega-ox w/o beta-ox}HBV is a cocarcinogen for... {Ans: hepatocellular carcinomas}tetracyclin, gentamycin, streptomycin {Ans: binds to 30S subunit and blocks peptidyl transferase}Hyperthyroidism {Ans: increased basal metabolic rate, increased warmth, weight loss, insomnia; diagnosed by decreased level of TSH}What is a reducing-sugar test? {Ans: Tests for aldo-keto sugars}Explain lac operon {Ans: ^ lactose, v glu induces separation of lac repressor, inducing lac genes expression to make proteins to breakdown lactose}What TCA step makes GTP? {Ans: succinate thiokinase}What is pralidoxime chloride? {Ans: reactivate acetylcholinesterase}What is amylo-4,6-transferase? {Ans: branching enzyme for glycogen synth}avidin, found in egg whites {Ans: binds to biotin, decreases carboxylase function}Sanfilippo A syndrome {Ans: heparan sulfamidase}arsenic {Ans: pyruvate dehydrogenase ib; smell of garlic}Which ETC complex contains heme? {Ans: cytochrome oxidase}Morquoi syndrome {Ans: galactose-6-sulfatase def}Rotenone {Ans: inhibits complex I of ETC}Hypothyroidism {Ans: decreased BMR, excessive sleeping, weight gain; diag by ^ TSH}Conversion of glucose to sorbitol is accomplished