fats vs. oils + membrane transport + membrane proteins + cell membranes + lipoproteins+ cholesterol
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16 Terms
What is a fat?
A triacylglycerol solid at room temperature with many saturated fatty acids.
What is an oil?
A triacylglycerol liquid at room temperature with many unsaturated fatty acids.
What type of molecule is cholesterol?
A steroid lipid.
Where is cholesterol produced?
In the liver.
What is cholesterol used for in the body?
Making steroid hormones
Vitamin D
Cell membranes
Why does cholesterol need lipoproteins?
Because cholesterol is insoluble in blood.
What does LDL do?
Carries cholesterol from liver to tissues.
Why is LDL called bad cholesterol?
It can deposit cholesterol in arteries.
What does HDL do?
Carries cholesterol back to the liver.
What is the main component of cell membranes?
Phospholipids
What does amphipathic mean?
Having both hydrophilic and hydrophobic parts.
What structure do phospholipids form in water?
A lipid bilayer.
What is an integral protein?
A protein that spans the entire membrane.
What is a peripheral protein?
A protein attached to one side of the membrane.
What is passive transport?
Movement with concentration gradient without energy.
What is active transport?
Movement against concentration gradient using ATP.
