Cholesterol Flashcards
Cholesterol is an example of what kind of molecule?
example of a sterol
From where do the carbons in cholesterol come?
all from acetyl CoA
Cholesterol is present in what compounds?
glucose or fatty acids and bile
Do humans eat more cholesterol or make some cholesterol?
humans make more cholesterol via skin, liver, and intestines than what we eat in our diet
What are trans-fatty acids?
polyunsaturated fats
What do trans-fatty acids do?
body tissues, skin, liver, and intestines,
What foods contain cholesterol?
animal foods such as egg yolks, organ meats, and fish eggs
Where is cholesterol made in the body?
in the arteries, skin, liver, and intestines majority in intestines, only 20% liver
How is cholesterol synthesis regulated?
glucagon, insulin, dietary cholesterol, and drugs
what is a complex ring structure that is a monohydric alcohol?
Sterol
True or False: If you eat more cholesterol, your liver will produce less?
True
What is the rate limiting step in cholesterol synthesis
HMG CoA reductase
What does glucagon do in cholesterol synthesis
it favors the inactivation of HMG CoA and therefore shutting down cholesterol synthesis
What does insulin do in cholesterol synthesis
factors the active form of reductase and increases cholesterol synthesis
