What kinds of bonds do lipase break in order to release fatty acids from triacylglycerols? carbon-carbon double bonds carbon-carbon single bonds esters amide bonds
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What kinds of bonds do lipase break in order to release fatty acids from triacylglycerols?
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carbon-carbon double bonds |
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carbon-carbon single bonds |
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esters |
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amide bonds |
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- How does hydrochloric acid aid in the digestion of food? Hydrochloric acid breaks down the peptide bonds, glycosidic bonds, and acid anhydride bonds among proteins, carbohydrates, and lipids respectively. Hydrochloric acid does not really participate in the digestion of food; however, the acidic environment due to HCl activates pepsinogen which will be converted into pepsin that breaks down peptide bond between amino acids in a polypeptide. Hydrochloric acid is the gastric juice that stops lipid digestion in the stomach. Hydrochloric acid initiates carbohydrate and protein digestion in the stomach.Lipogenesis, or fatty acid synthesis, occurs in several cycles. A diagram of the reactions of the first cycle of fatty acid synthesis is shown. Select all of the true statements. Malonyl-CoA adds a two-carbon group to the growing fatty acid chain with each cycle. Acetyl-SCOA provides the carbon used for fatty acid synthesis. The reactions of lipogenesis include, but are not limited to, condensation, reduction, and dehydration. The first cycle of lipogenesis yields CO₂, one NADP+, and an acyl group attached to ACP. In lipogenesis, acetyl and acyl molecules are activated by an acyl carrier protein (ACP). Each cycle lengthens the fatty acid chain by three carbon atoms. _i CH3-C-S-KS+ 0-C-CH₂-C-SACP acetyl-ACP malonyl-ACP CO2 || CH3 C-CH₂-C-SACP NADPH + H+ NADP+ OH || CH3 CH-CH₂-C-SACP H₂O || CH3CH=CH-C-SACP NADPH + H+ NADP+ CH3CH₂CH2-C-SACPNon-digestible carbohydrates are most commonly referred to as which of the following? Glycogen Amylase Maltose Dietary fiber
- Pancreatic lipase is necessary to break down fats in the body. It requires a protein, prolipase, to reach its peak enzymatic activity. Which of the following statements is MOST correct? Prolipase is a coenzyme. Prolipase is a prosthetic group. Prolipase is a vitamin. Pancreatic lipase is an apoenzyme.Which of the following statements is true for the use of ketone bodies? Brain cells cannot use ketone bodies as energy Ketone bodies can cause ketoacidosis Cardiac muscles cannot use ketone bodies as energy Increasing carbohydrate in take will lead to production of ketone bodiesKetone bodies are a byproduct of metabolism. lipid protein amino acid carbohydrate
- What is the role of each of the following lipoproteins in the transport of lipids? -VLDL -HDL -LDLWhich of the following substances derived from lipid catabolism serves as a precursor for glucose synthesis: acetoacetyl CoA acetone palmitate acetate O glycerolWhich of the following is NOT an isoprene-derived lipid? Beta-carotene Beeswax Coenzyme Q Cholesterol
- Upon exposure to glucagon, what is the phosphorylation state and activity of Triacylglycerol Lipase? O Phosphorylated, active O Unphosphorylated, active O Phosphorylated, inactive O Unphosphorylated, inactiveExplain the difference between the glucogenic and ketogenic amino acids? How does the body used them in energy production?Which carbohydrate is NOT produced in the pentose phosphate pathway? glyceraldehyde 3-phosphate erythrose 4-phosphate fructose 6-phosphate fructose 1,6-bisphosphate glucose 6-phosphate