Q. When a muscle contracts, the Transverse tubules shorten, the myofibrils and sarcoplasmic reticulum close together Thin filaments and thick filaments of the sarcomere shorten Light chains dissociate from the heavy chains of myosin H bands and I bands of the sarcomere shorten because the thin filaments and thick filaments side past each other Answer: […]
Q. The nerve impulse that initiates muscular contraction begins with the binding of acetyl choline to receptors in the sarcoplasmic reticulum causes both the plasma membrane and the transverse tubules to undergo hyperpolariation causes opening of calcium channels which lead to an increase in calcium contreation within the sarcomere prevents sodium entering the sarcomere Answer:
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Q. Platelet aggregation: is initiated at the site of an injury by conversion of fibrinogen to fibrin is inhibited in uninjured blood vessels by the secretion of prostacyclin by intact vascular endothelium causes morphological changes and a release of the vasodilator serotonine is inhibited by the release of ADP and thromboxane A2 Answer: is inhibited
Q. The contraluminal plasma membrane of small intestinal epithelial cells contain Disaccharidases Aminopeptidases GLUT 5 Na+/ K+ ATPase Answer: Na+/ K+ ATPase
The contraluminal plasma membrane of small intestinal epithelial cells contain Read More »
Q. Histamine is a potent secretagogue of Amylase by the salivary gland HCI by the stomach Gastrin by the stomach NAHCO3 by the pancreas Answer: HCI by the stomach
Q. Which of the following is a folate analog? Methotrexate Carnosine Azaserine Aniserine Answer: Methotrexate
Q. Which of the following mineral element facilitates insulin binding to cell receptor site? Zinc Selenium Copper Chromium Answer: Chromium
Q. An organic substance bound to an enzyme and essential for its activity is called isoenzyme coenzyme holoenzyme apoenzyme Answer: coenzyme
An organic substance bound to an enzyme and essential for its activity is called Read More »
Q. Which one of the following is a reducing sugar? galactose gluconic acid sucrose b methyl galctoside Answer: galactose
