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Biochemistry 301 UW Madison: Exam 2b
Solutions
great bulk of lipids in organisms are... - Answers✓✓triglycerides or triglycerols
general structure of a fatty acid - Answers✓✓carbon chain + carboxyl group on end
source of triglycerides - Answers✓✓the diet, de novo biosynthesis in the liver, and storage
deposits in adipocytes
Bile salts - Answers✓✓- cholesterol derivatice
- detergent substances synthesized by the liver
- stored in gallbladder
- essential for digestion of lipids and their absorption through intestinal mucosa
cholic acid - Answers✓✓primary bile acid (bile salt)
bile salts association with triacyglycerol - Answers✓✓hydrophobic side of bile salt associates
with triacyglycerol and forms a micelle.
Lipoproteins - Answers✓✓noncovalent lipid-protein complexes that allow movement of lipids
through aqueous environments such as blood and lymph
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25/11/2024 09:27AM
free lipids are - Answers✓✓undetectable in the blood
Apolipoproteins - Answers✓✓the protein components of lipoproteins
four major classes of lipoproteins - Answers✓✓chylomicrons, VLDL, LDL, HDL
the higher the lipid content... - Answers✓✓the lower the density
the higher the protein content... - Answers✓✓the higher the density
chylomicrons - Answers✓✓transport dietary fat from the intestine to peripheral tissues
VLDLs - Answers✓✓comparable role for triacylglycerols synthesized in the liver
LDLs - Answers✓✓play a major role in transporting cholesterol to tissues
HDLs - Answers✓✓play a major role in returning excess cholesterol from tissues to the liver
for metabolism or excretion
Components of lipoproteins - Answers✓✓triacylglycerols, protein, phospholipids, free
cholesterol, and cholesterol bound to fatty acids
synthesis of fatty acids is in the - Answers✓✓cytoplasm
breakdown of fatty acids is in the - Answers✓✓mitochondra