Eran Levin Fats Flashcards

1
Q

Can We store fat

A

Yes

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2
Q

Can Three glyceride contain different types of fatty acids

A

Yes

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3
Q

Can animals produce omega six and omega-3 fatty acids

A

No

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4
Q

does humans able to Synthesize fatty acid with multiple double bonds

A

Yes but it has to take fatty acid with two double bonds and from it make one with five double bonds

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5
Q

Which fatty acid cause cholesterol to sink in the arteries

A

Omega six

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6
Q

Where the extension of omega fatty acids occure in our body

A

In the ER of the liver cells

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7
Q

To which pathologies stearoyl CoA desaturase is linked

A

Obesity and cancer

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8
Q

Low activity of stearoyl CoA deaturase can cause

A

Less ability to store fat
insulin resistance
problems with inserting PUFA in the membranes

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9
Q

What activates SCD enzyme

A

Low temperature
diet rich in carbohydrates
cholesterol vitamin a and vitamin D

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10
Q

What inhibits the SCD enzyme

A

MUFA
PUFA
Cyclopropane fatty acids

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11
Q

Which enzyme the cycloprpenic acid inhibits

A

SCD enzyme

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12
Q

Why cow does not consume halamit

A

Because it contains the Cyclopropanic fatty acid that can inhibit the activity of the SCD enzyme

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13
Q

Where plant store linolenic acid?

A

In the membrane

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14
Q

How plants can mobile fat if it’s not soluble

A

Using lecitin which is a phospholipid

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15
Q

Which group joins phospholipid to create lecitin

A

Cholin

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16
Q

In which type animals there are less saturated fats as we look more to the poles?

A

Marine mammels

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17
Q

Which fatty acids are the most common in membrane of animals

A

Stearic
Palmitic
Oleit
Linoleit acid

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18
Q

Which fatty acid can build up to 90% of the membrane

A

Oleit fatty acid

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19
Q

How Unsaturated fatty acid contribute to the metabolic rate

A

Enhances it

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20
Q

In high temperature, which diet was preferable to the development

A

Saturated fats

21
Q

In low temperture which diet was preferble

A

PolyUnsaturated fats

22
Q

How PUFA influence longevity?

A

due to new researches, it shortens it

23
Q

Which insect nourish its offspring with milk

A

Roach

24
Q

From Which nutrient we can produce the biggest amount of water

A

Fat

25
Q

How does bacteria produce glucose from fatty acids

A

Through the glyoxalate pathway

26
Q

In the glyoxalate pathway to which product that oxaloacetate can become

A

Glucose through gluconegenesis

27
Q

What is not going away in the glyoxalate pathway

A

Co2

28
Q

For which purposes organisms store fat

A

Migration, Environmental changes, nature disaster

29
Q

What birds store before migration

A

Fat

30
Q

What does birds prefer to eat before migration

A

Carbs

31
Q

What is the advantage and disadvantage in using pufa

A

Adv - more efficent Energy expenditure

Disadvantage - more oxidative stress

32
Q

Where sharks store fat

A

In their liver

33
Q

What probably is the main ingredient in the food in the nutrition of the Monarch butterfly when it riches the north?

A

PUFA

34
Q

How hibernation influence metabolism

A

Slows it down

35
Q

What allows PUFA to the namneman

A

Maintaining liquid membranes

Easier consumption in comparison to saturated fatty acids

36
Q

What is the most energy consuming part of hibernation

A

Waking up

37
Q

What is the best way to feel more heat

A

Trembling the muscles

38
Q

What should be the initiate temperature of the body in other distractions to start trembling the muscles

A

16 Celsius

39
Q

What product animals use in order to get to 16 Degrees Celsius to start trembling their body

A

Brown fat

40
Q

How heat is produced in the mitochondria of the brown fat cell

A

Uncoupled proteins helps protons to move from one mitochondria to the other without producing ATP

41
Q

What gives the brown color to the fat cells

A

Mitochondria

42
Q

Does ATP produced during the burn of brown Fat cells

A

No

43
Q

How caffeine influence brown brown fat

A

Activates it

44
Q

Which population has high level of brown fat

A

Babies
animals
organisms that spends a lot of time in extremely cold environment

45
Q

What is the advantages of bets that live in hot caves

A

They don’t need to invest a lot of energy to increase their temperature to tremble their wings

46
Q

When animals are hibernating what is the energy source they use

A

Fatty acids

47
Q

What happens to the metabolism of glucose when animals are hibernating

A

It shuts off

48
Q

Which insect hibernating?

A

צרעה מזרחית ויתושות

49
Q

How does hibernation in insect is called

A

Dipause