What are VLDL (Very low density lipoproteins)
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-in the liver cells are making cholesterol, fatty acids, and other lipid
compounds
-the lipids made in the liver and those collected from chylomicron
remnants are packaged with proteins as a VLDL and shipped to other parts
of the body
-as the VLDL travels through the body, cells remove triglycerides.
-as they lose the triglycerides, the VLDL shrinks and the proportion of lipids
shifts to where cholesterol becomes the predominant lipid and the
lipoprotein becomes smaller and more dense
-as this occurs, the VLDL becomes an LDL (low density lipoprotein) loaded
with cholesterol, but containing relatively few triglyceride
Stability is also influenced by...?
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the degree of unsaturation
The degree of unsaturation influences?
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the firmness of fats at room temperature
What are the two advantages of hydrogenation?
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1. it protects against oxidation by making polyunsaturated fats more
saturated (increasing shelf life)
2. alters the texture of foods by making liquid vegetable oils more solid
Most polyunsaturated vegetable oils are _____ at room temperature?
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liquid
What is the role of bile's routes in fat digestion?
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-after bile enters the small intestines and emulsifies fat, it has two possible
destinations
1. most bile is reabsorbed from the small intestine and recycled
2. some of the bile can be trapped by dietary fibers in the large intestine
and excreted
-Because cholesterol is used to make bile, excretion of bile lowers
cholesterol
What is lipid transport?
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-transport vehicles are known as lipoproteins and they solve the body's
challenge of transporting fat through the watery bloodstream
-the body makes four main types of lipoproteins distinguished by their size
and density
-each type contains different kinds and amounts of lipids and proteins; the
more lipids, the less dense; the more proteins the more dense
What are chylomicrons?
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-largest and least dense of the lipoproteins
-transport diet derived lipids from the small intestines to the rest of the
body
-cells all over the body remove triglycerides from the chylomirons as they
pass by so they keep getting smaller and smaller
-Within 14 hours after absorption, most of the triglycerides have been
depleted and a few remnants of protein cholesterol and phospholipids
remain
Give this one a try later!
-in the liver cells are making cholesterol, fatty acids, and other lipid
compounds
-the lipids made in the liver and those collected from chylomicron
remnants are packaged with proteins as a VLDL and shipped to other parts
of the body
-as the VLDL travels through the body, cells remove triglycerides.
-as they lose the triglycerides, the VLDL shrinks and the proportion of lipids
shifts to where cholesterol becomes the predominant lipid and the
lipoprotein becomes smaller and more dense
-as this occurs, the VLDL becomes an LDL (low density lipoprotein) loaded
with cholesterol, but containing relatively few triglyceride
Stability is also influenced by...?
,Give this one a try later!
the degree of unsaturation
The degree of unsaturation influences?
Give this one a try later!
the firmness of fats at room temperature
What are the two advantages of hydrogenation?
Give this one a try later!
1. it protects against oxidation by making polyunsaturated fats more
saturated (increasing shelf life)
2. alters the texture of foods by making liquid vegetable oils more solid
Most polyunsaturated vegetable oils are _____ at room temperature?
Give this one a try later!
liquid
What is the role of bile's routes in fat digestion?
, Give this one a try later!
-after bile enters the small intestines and emulsifies fat, it has two possible
destinations
1. most bile is reabsorbed from the small intestine and recycled
2. some of the bile can be trapped by dietary fibers in the large intestine
and excreted
-Because cholesterol is used to make bile, excretion of bile lowers
cholesterol
What is lipid transport?
Give this one a try later!
-transport vehicles are known as lipoproteins and they solve the body's
challenge of transporting fat through the watery bloodstream
-the body makes four main types of lipoproteins distinguished by their size
and density
-each type contains different kinds and amounts of lipids and proteins; the
more lipids, the less dense; the more proteins the more dense
What are chylomicrons?
Give this one a try later!
-largest and least dense of the lipoproteins
-transport diet derived lipids from the small intestines to the rest of the
body
-cells all over the body remove triglycerides from the chylomirons as they
pass by so they keep getting smaller and smaller
-Within 14 hours after absorption, most of the triglycerides have been
depleted and a few remnants of protein cholesterol and phospholipids
remain
