Ketone Bodies and Digestion of Triacylglycerols
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Ketone Bodies and Digestion of Triacylglycerols

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@JovialVampire

Questions and Answers

Acetoacetate is a ketone body that loses CO2 to form acetone.

False

Triacylalycerols are digested in the small intestine.

True

Ketone bodies are formed in the liver during lipolysis.

True

Lipids are a poor source of energy.

<p>False</p> Signup and view all the answers

Ketosis occurs when blood pH rises above 7.4.

<p>False</p> Signup and view all the answers

Glycerol is a fatty acid.

<p>False</p> Signup and view all the answers

Triglycerides are stored in adipose cells as a source of energy.

<p>True</p> Signup and view all the answers

Pancreatic lipases are involved in the digestion of proteins.

<p>False</p> Signup and view all the answers

Acidosis occurs when blood pH rises above 7.4.

<p>False</p> Signup and view all the answers

Lipids are formed from the combination of fatty acids with glycerol.

<p>True</p> Signup and view all the answers

Study Notes

Lipid Metabolism

  • Lipids are esters of fatty acids with glycerol, also called triglycerides or triacylglycerols.
  • They are a good source of energy, providing 9 calories per gram.
  • Triglycerides are the main stored form of energy in adipose cells.

Digestion of Triacylglycerols

  • Triacylglycerols are digested in the small intestine.
  • Pancreatic lipases break down triacylglycerols into fatty acids and glycerol.

Ketone Bodies

  • Acetoacetyl CoA hydrolyzes to acetoacetate, a ketone body.
  • Acetoacetate can be converted to p-hydroxybutyrate, another ketone body.
  • Acetoacetate can also lose CO2 to form acetone, a third ketone body.
  • Ketone bodies are produced when there is a lack of glucose, leading to the breakdown of fatty acids.
  • High levels of ketone bodies in the blood can lead to acidosis, characterized by a pH below 7.4.

Ketosis

  • Ketosis is a state in which ketone bodies accumulate in the blood.
  • Ketosis can occur in diabetes, diets high in fat, and starvation.

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Description

This quiz covers the digestion of triacylglycerols, the formation of ketone bodies, and their effects on the body. It includes the different types of ketone bodies and their formation.

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