lipid metabolism Flashcards

1
Q

When do we need to metabolise LIPIDS

A

After glucose and glycogen stores have been used up

we have enough lipids to store 40 hours worth of energy

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2
Q

What of the three classes of lipids

A

Fatty acid derived
HMG derived
fat-soluble vitamins

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3
Q

Give an example fatty acid derived lipid

A

Phospholipids, triglycerides

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4
Q

HMG derived lipids examples

A

Cholestrol and ketone bodies

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5
Q

Fat-soluble vitamins examples of types

A

A DEK Ah don’t eat kale

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6
Q

During fatty acid metabolism what acts on fatty acids in the stomach to break them down

A

Lipases

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7
Q

Fatty acids are recombined and packaged into what in the small intestine

A

Chylomicrons

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8
Q

Chyomicrons travel system

A

Lymphatic

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9
Q

Two fates of chyomicrons

A

Two adipose tissue to deposit the TAG for storage

order of tissues where they can be oxidised

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10
Q

What hormone would cause TAG stored in adipose to travel to consumer tissue

A

Glycagon

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11
Q

Red fatty acid oxidation not occur

A

In red blood cells as have no mitochondria

and in the brain as can’T cross the blood-brain barrier

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12
Q

What enzyme is used to combined coenzyme A with fatty acid

A

Acrylic coenzyme synthase

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13
Q

Transports fatty acids across the mitochondrial membrane

A

carnitine shuttle

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14
Q

How is glycerol metabolised

A

Converted to glycerol phosphate violation kinase

Eva enters glycolysis or confines of fatty acids to make TAG

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15
Q

Three main ketone bodies

A

Acetone
acetoacetate
B- hydroxybutyrate

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16
Q

What happens to ketone bodies if fatty acid oxidation is high

A

This means heating bodies and starvation

form acetyl coenzyme a which can into kreb cycle

17
Q

Ketone bodies are synthesised by the liver mitochondria during starvation from what precursor molecule

A

acytyl coenzyme A

18
Q

In liver mitochondria in a fed state seat of CoA is made into

A

Cholesterol

19
Q

How are ketone bodies used

A

Travel to consumer tissue converted into acetyl CoA and Krebs cycle

20
Q

Acetone cannot be re-converted into acetyl-CoA therefore what is its fate

A

It is excreted in urine ketonuria

21
Q

When is a ketone synthesis is activated

A

During starvation low insulin to glycogen ratio