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Your Doctor prescribed you epinephrine glucagon and after a week you noticed that you are losing weight, what possible enzyme(s) may have been affected by the drug causing you to lose weight?
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- Stretch of the stomach is an important cue for the regulation of food intake. The brain receives information about stomach stretch from: a. sensory receptors on the skin of the abdomen b. the hormone angiotensin c. visual feedback d. the vagus nerve Phenylethanolamine N-methyltransferase (PNMT) is an enzyme that converts norepinephrine into epinephrine. Which of the following would you expect after treatment with an inhibitor of PNMT? a. Cells that normally use dopamine as a neurotransmitter would now release epinephrine b. Cells that normally use epinephrine as a neurotransmitter would now release norepinephrine c. Cells that normally use epinephrine as a neurotransmitter would stop releasing neurotransmitterIntravenous injection of KCl could be fatal. Why?Which of the following is false about chymotrypsin? A Hydrolytic cleavage of a peptide bond by chymotrypsin involves two nucleophilic attacks to the substrate B It is activated in the presence of trypsin C It is synthesized in the thyroid gland D Polypeptide chains in chymotrypsin are linked by S-S bonds
- Individuals with phenylketonuria must avoid dietary phenylalanine because they are unable to convert phenylalanine to tyrosine. Look up this condition and find out what happens if phenylalanine accumulates in the body. Would you advise a person with phenylketonuria to consume foods sweetened with aspartame? Why or why not?Marianne has type 1 diabetes. One day, after accidentally injecting herself with too much insulin, she starts to shake and feels confused. Following her doctor’s suggestion, she drinks a glass of orange juice—a ready source of glucose—and soon her symptoms subside. What caused her symptoms? How would a glucose-rich snack help?John was repeating George Palade's pulse and chase experiment to trace insulin secretion pathway within cells. When he observed his samples under the electron microscope, he saw the ³H]-leucine labelling all over the cells, which indicates that he made some mistakes in carrying out the experiment. Which of the following is a correct suggestion to improve his result? O Use liver sample after the pulse-chase injection O Inject [13C]-leucine instead of [³H]-leucine Inject non-labeled leucine earlier than what he did O Use phase contrast light microscope instead of electron microscope O Observe the sample two days after pulse-chase injection
- Which 2 endocrine glands exert the most control over blood calcium level:a) anterior pituitary and adrenal cortex b) thyroid and ovaries c) adrenal cortex and thyroid d) parathyroid and anterior pituitary e) thyroid and parathyroidWhat is the role of calcium at the synaptic terminal?Explain the active site theory of enzyme functioning?It is absolutely not necessary to produce amylase in an active form in our body. But it is not in the case of trypsin. Given reasons.Why do steroid hormones, as drugs, not require transducing elements to exert their effects on cellular metabolism? .
- Suppose you are an intern working in a small rural emergency room in Bumblescum, SC. Your hospital is short on nurses and you have to prepare IV fluids for all of your patients. One of your patients is suffering from an insulin overdose and you are trying to regulate her blood sugar back to normal. You decide to administer an intravenous drip of 5% dextrose over an extended period with monitoring. Normally IV bags containing 5% dextrose are available, but due the current healthcare crisis the hospital administrators have decided to order standard bags of 0.9% NaCl. This means you will need to remove a calculated volume of the 0.9% NaCl from the bag and add back the calculated volume of dextrose. A container of 50% dextrose is available in the ER stockroom. How much of the 50% dextrose should be added to the bag if the total IV bag volume will be 1000 mL and a 5% solution is desired?A certain type of tumor results in the overproduction of glucagon. Researchers claim that treatment with insulin can counteract the effects of the excess glucagon on the pathway shown in Figure 2. Provide reasoning to justify the researchers' claim.Which of the following about adipokines is true? They are: 1) intracellular enzymes 2) secreted from the hypothalamus 3) endocrine signals
