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BioChem C785 - WGU - Module 5 - all questions and answers latest 2021

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BioChem C785 - WGU - Module 5 - all questions and answers latest 2021 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 Unsaturated fatty acids can have different arrangements of hydrogen atoms at the double bond depending on whether the bonds are cis- or trans- configuration. A consequence of this: Correct Answer- fatty acids with cis-configuration double bonds do not pack together well which lowers their melting point What best describes fatty acid hydrogenation? Correct Answer- Hydrogenation converts some unsaturated fatty acids into saturated fatty acids Phospholipids have parts that are hydrophobic (non-polar, not soluable in water) and a part that is hydrophilic (polar; water-soluable). What term do we use to describe a molecule that is both polar and non-polar? Correct Answer- amphipathic Which compounds make up the greatest reserves of energy in our bodies? Correct Answer- triglydercides Acetyl-CoA is a central to metabolism. Carbohydrates, proteins, and fats can all produce Acetyl-CoA, though they use different pathways to make it. Correct Answer- True Beta oxidation of a C14 fatty acid will make 6 acetyl-CoA units after 7 rounds of beta-oxidation Correct Answer- True Mammals and plants have the ability to synthesize their fatty acids. Which one of the following molecules is the precursor to building fatty acids [Show More]

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