PG TRB Preparation Zoology Questions with Answers CARBOHYDRATE Part - 16

251 . Which reaction provide additional ATP  for muscle contraction?

                  Answer : Myokinase reaction

252 . Which is required for the conversion of creatine to creatine phosphate?

              Answer : High – energy phosphate bond (his is derived from ATP )

253 . Which enzyme catalyse the transfer of phosphate  from ATP to creatine to form creatine phosphate?

                  Answer : ATP – creatine transphosphorylase

254 . What about the concentration of ATP and creatine phosphate in resting muscle?

                 Answer : High concentration

255 . Give the conversion of lactic acid that is formed during muscle contraction

               Answer :  Considerable amount of lactic acid is formed during muscle contraction , which diffuses into liver where it is oxidised  back to pyruvic acid  and converted to liver glycogen.

256 . What is the other name for Cori cycle?

                Answer : Lactic acid cycle

257 . What about the concentration of glycogen, ATP and creatine phosphate in excausting muscle?

                 Answer : Very low concentration of glycogen, ATP and creatine phosphate in excausting muscle

258 . What is the use of excess oxygen consumed after the exercise?

                   Answer : This oxygen is used to oxidise the lactic acid to glycogen and to restore the normal creatine phosphate concentration.

259 . What is the normal blood glucose level in a healthy individual?

          Answer : 80 to 120 mg %

260 . What is the normal blood glucose level  during postabsorptive period?

                 Answer : 75 to 90 mg %

261 . What is the maximum limit of absorption of glucose in alimentary mechanism?

                 Answer :  1. 84 g per kg body weight per hour

262 . What are the hormones increases absorption of glucose from the intestine?

                 Answer : Thyroxine and adreno cortical hormones.

263 . Which vitamin deficiency delays absorption of glucose from intestine?

                 Answer : Vitamin B

264 . Which organ plays an important role in blood glucose regulation?

                Answer : Liver

265 . When the blood glucose level is high . Liver restore the normal level . Explain this.

                 Answer : 1. Liver accelerate glycogenesis  2. Increase utilization of  glucose

266 . What  are the hormones favour hepatic glycogenolysis?

                Answer : Adrenaline,  glucagon and thyroxine

267 . Which hormone inhibit gluconeogenesis?

                  Answer : Insulin

268 . Which region secrete insulin hormone?

                  Answer : Beta cells of islets of langerhans

269 . What hormone is secreted from alpha cells of  langerhans that regulate blood sugar level?

                 Answer : Glucagon

270 . What is the other name for glucagon?

                Answer : Hyperglycemic glycogenolytic factor ( HGF )

271 . What is the initial reaction of glucose oxidation?

                 Answer : Hexokinase reaction

272 . Which hormone depresses the action of glucose – 6 – phosphatase?

                 Answer : Insulin

273 . What is the other name for adrenaline?

                  Answer : Epinephrine

274 .  What diabetogenic hormone is secreted from thyroid?

                 Answer : Thyroxine

275 . Which region of adrenal secrete adrenaline or epinephrine hormone?

               Answer : Adrenal medulla


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