PART 2 Flashcards

1
Q

They constitute the main
components of membranes

A

Complex Lipids

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2
Q

Contain an alcohol, two fatty acids, and a
phosphate ester.

A

Phospholipids

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3
Q

In glycerophospholipids, the alcohol/base is ________

A

glycerol

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4
Q

In sphingolipids, the alcohol/base is ______

A

sphingosine

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5
Q

Complex lipids that contain a carbohydrate

A

glycolipids

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6
Q

Complex lipids form the ________ around cells and
around _______ within cells.

A

membrane and small structures

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7
Q

the second most abundant group of naturally occurring
lipids.

A

Glycerophospholipids

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8
Q

what is the other name for glycerophospholipids

A

phosphoglycerides

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9
Q

Found almost exclusively in plant and animal
membranes, which typically consist of 40% -50%
__________ and 50% - 60% _________

A

Glycerophospholipids
Protein

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10
Q

The three most abundant
fatty acids in phosphatidic
acids are

A

palmitic (16:0)
stearic (18:0)
oleic (18:1)

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11
Q

a lipid with 2 fatty acids, one phosphate and one choline

A

phosphatidylcholine/ lecithin

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12
Q

Contain the long-chain aminoalcohol

A

sphingolipids

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13
Q

The sphingolipid myelin is found in the coatings of
_________

A

nerve axons

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14
Q

A group of plant and animal lipids that contains
this tetracyclic ring structure.

A

Steroids

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15
Q

is the most abundant steroid in the human
body

A

cholesterol

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16
Q

Carriers of cholesterol.

A

lipoprotein

17
Q

what are the four types of lypoprotein

A

-High Density Lipoprotein (HDL)
-Low) Density Lipoprotein (LDL
-Very Low Density Lipoprotein (VLDL)
-Chylomicrons

18
Q

consists of about 33% protein and 30% cholesterol.

A

High Density Lipoprotein

19
Q

contains about 25% protein and 50% cholesterol.

A

Low density Lipoprotein

20
Q

carries
triglycerides (fats) synthesized by the liver

A

Very Low density Lipoprotein

21
Q

carry dietary lipids synthesized in
the intestines.

A

Chylomicrons

22
Q

Normal plasma levels are

A

175 mg/100 mL.

23
Q

The number of LDL receptors is controlled by a

A

feedback mechanism

24
Q

increase in cholesterol =

A

low production of LDL receptors

25
Q

high LDL =

A

high cholesterol

26
Q

high LDL + low HDL =

A

faulty cholesterol transport and possible atherosclerosis

27
Q

Synthesized in the testes from cholesterol.

A

Male sex hormones

28
Q

Synthesized in the ovaries from progesterone.

A

Female sex hormones

29
Q

Synthesized in the adrenal cortex.

A

Glucocorticoid hormones

30
Q

are oxidation products of cholesterol.

A

bile salts