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Biochem C785 - WGU - Module 5 - Questions And Answers Graded A
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Biochem C785 - WGU - Module 5 - AllQuestions
What vitamin does not travel through the bloodstream in the form of a lipid micelle? Correct Answer:
Vitamin C
Which lipid has a 4-ring structure? Correct Answer: Sterol
Which of the following situations is MOST likely to increase the rate of beta oxidation? Correct
Answer: fasting
A patient who is on a no-fat diet is at particular risk of deficiency in: Correct Answer: Vitamin A
During starvation, triglycerides can help supply some of the body's glucose needs. Which breakdown
product of triglycerides can be used to make glucose? Correct Answer: glycerol
CH3(CH2)6CH=CH(CH2)2COOH Correct Answer: liquid at the lowest temperature
Describe the steps involved in fatty acid synthesis Correct Answer: Acetyl-CoA is transported to the
cytoplasm - Biotin transfers a carboxylate group to acetyl-CoA - the malonyl group is transferred to a
carrier protein - malonyl ACP combines with acetyl-CoA, - malonyl-CoA is added repeatedly to the
growing fatty acid
What fatty acid will produce 8 Acetyl CoA molecules after it is completely metabolized via beta
oxidation? Correct Answer: CH3(CH2)4CH=CH(CH2)4CH=CH(CH2)8COOH
Which set of molecules are produced by the beta oxidation of fatty acids? Correct Answer: Acetyl
CoA, NADH, FADH2
Gastric bypass surgery results in an increase in the production of GLP-1, a peptide that promotes
insulin secretion. This is thought to be associated with the tendency for these patients' type II
diabetes to resolve after the surgery. If a gastric bypass patient has a mutation in GLP-1 that impairs
its function, what is to be expected? Correct Answer: The patient would have reduced insulin
secretion compared to patients with normal GLP-1, and this reduction results in increased fatty acid
oxidation
Through mandatory state testing, a 2-day-old newborn is found to have a medium chain acyl-COA
dehydrogenase deficiency (MCADD). This enzyme deficiency interferes with the baby's ability to
break down medium chain fatty acids via beta oxidation. Her parents need to be given specific
instructions on what the baby can ingest. What is correct? Correct Answer: She will not be able to
utilize adipose tissue for ATP production as effectively as a baby without the disorder
Which of the following contributes to the development of ketoacidosis in a diabetic patient Correct
Answer: A reduction in citric acid cycle intermediates, which decreases the amount of oxaloacetate
that acetyle-CoA can combine with to enter the citric acid cycle
What describes a fatty acid? Correct Answer: C16H3202
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