Which of the following would you predict to be the consequence of Vitamin B12 deficiency in ruminant animals? Select one: a. Inability to metabolize volatile fatty acids for oxidation in Krebs Cycle b. Inability to absorb digested carbohydrates in the rumen c. Inability of rumen microflora to enzymatically cleave bonds between sugars in cellulose d. Inability to convert glucose to pyruvic acid

Which of the following would you predict to be the consequence of Vitamin B12 deficiency in ruminant animals? Select one: a. Inability to metabolize volatile fatty acids for oxidation in Krebs Cycle b. Inability to absorb digested carbohydrates in the rumen c. Inability of rumen microflora to enzymatically cleave bonds between sugars in cellulose d. Inability to convert glucose to pyruvic acid

Ebk:Nutrition & Diet Therapy

10th Edition

ISBN:9780357391747

Author:DEBRUYNE

Publisher:DEBRUYNE

Chapter17: Foods And Food Consistency For Upper Gi Disorders

Section: Chapter Questions

Problem 1CA

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Which of the following statements describing the mobilization and utilization of fatty acids in the body is INCORRECT? Answers A-E A. Fatty acids are excellent fuels for skeletal muscle. B. On a molar basis, fatty acid oxidation to carbon dioxide and water yields more ATP than do carbohydrates C. It is Coenzyme A derivatives of fatty acids that are beta-oxidized D. Fatty acids are transported in plasma bound to albumin E. Fatty acid oxidation to carbon dioxide and water does not require a functional Krebs cycle
The Liver makes “Ketone Bodies” (acetoacetic acid and -hydroxybutryic acid): a. as a long-term energy storage reserve b. to provide an alternative energy source to muscle, the kidney and other organs when on a prolonged low carbohydrate diet c. from fatty acids oxidized to acetyl CoA d. to detoxify lactose absorbed from the large intestine e. when our muscles cannot get enough oxygen to carry out oxidative phosphorylation
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On the right is a diagram of plasma concentration of three metabolites: glucose, B- hydroxybutyrate, and free fatty acid of an experimental animal over weeks of starvation. 4. (a) Label the lines with the names of the three metabolites. Yellow: Red: 10 20 30 40 Blue: Days of starvation (b) What factor in the plasma binds to and transports free fatty acid (c) Where was B-hydroxybutyrate produced? Why it is produced? What are the purposes of producing it (d) How B-hydroxybutyrate is used as fuel in extrahepatic cells? Write down the reactions, enzymes, and cofactors (No need to elaborate on the TCA cycle). (e) How many ATP molecules or equivalent are generated after complete oxidation of one molecule of B-hydroxybutyrate? Show your calculations. Hint: You need to consider ATP consumption for bypassed steps that may normally yield or consume AT Plasma concentration (mM)
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