1. How many cycles of beta-oxidation will a fatty acid with 14 carbons undergo and how many acetyl-CoA molecules will it produce after undergoing beta-oxidation? 2. Which of the following is not used in fatty acid synthesis: a) NADPH (nicotinamide adenine dinucleotide phosphate b) Cobalamine (vitamin B-12) c) Biotin (vitamin B-7) d) Bicarbonate 3. Select the correct statement about the synthesis of fatty acids: a) Acetyl-CoA donates two carbon atoms b) the reverse of fatty acid synthesis is beta-oxidation c) Malonyl-CoA donates two carbon atoms d) CoA carries intermediates
Added by Nancy W.
Step 1
- Beta-oxidation shortens the fatty acid chain by 2 carbons per cycle. - For a 14-carbon fatty acid, the number of cycles is calculated as follows: \[ \text{Number of cycles} = \frac{14}{2} - 1 = 7 - 1 = 6 \] - Therefore, a 14-carbon fatty acid will undergo Show more…
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1) Which carbon atom is oxidized in the beta oxidation of fatty acids? Choose all answers that are a reasonable answer. (Could be Multiple answers) A) Every other carbon in the chain, not including the very first carbon. B) The beta carbons. C) Carbon-3 where carbon-1 is the carboxyl group carbon D) All the carbons 2) There are differences and similarities between fatty acid beta oxidation and fatty acid synthesis. Choose the statements that are true. (Multiple ans) A) CoA is the carrier in fatty acid beta oxidation. B) Fatty acid synthesis occurs in cytoplasm. C) NADPH is used for synthesis and NAD+ is used for oxidation of fatty acids. D) ACP is the carrier in fatty acid synthesis. E) Water is removed in fatty acid beta oxidation, but water is added during fatty acid synthesis. F) Fatty acid beta oxidation occurs in mitochondria. 3) Why is there a demand for ketone bodies? (Multiple ans) A) The brain uses glucose most of the time, but in starvation, ketone bodies are used. B) Bacteria produce ketone bodies as a means of fermenting sugar. C) Ketone bodies allow fuels to be made from acetyl-CoA for export to the blood. D) The liver uses ketone bodies for gluconeogenesis.
Dominador T.
Match the following answers with the statements regarding beta oxidation of a 22-carbon fatty acid 1. Number of acetyl CoA produced 2. Number of passes through the β-oxidation pathway 3. Number of ATP produced 4. Net ATP produced a. 172 b. 170 c. 10 d. 11
Describe the metabolic pathway of $\beta$ -oxidation; calculate the ATP from the complete oxidation of a fatty acid. Lignoceric acid, $\mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{22}-\mathrm{COOH},$ is a $\mathrm{C}_{24}$ fatty acid found in peanut oil in small amounts. a. Draw the condensed structural formula for the activated form of lignoceric acid. b. Indicate the $\alpha$ - and $\beta$ -carbon atoms in lignoceroyl-CoA. c. State the number of $\beta$ -oxidation cycles for the complete oxidation of lignoceric acid. d. State the number of acetyl-CoA from the complete oxidation of lignoceric acid.
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