Eran Levin Fats Flashcards

(49 cards)

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

24
Q

From Which nutrient we can produce the biggest amount of water

25
How does bacteria produce glucose from fatty acids
Through the glyoxalate pathway
26
In the glyoxalate pathway to which product that oxaloacetate can become
Glucose through gluconegenesis
27
What is not going away in the glyoxalate pathway
Co2
28
For which purposes organisms store fat
Migration, Environmental changes, nature disaster
29
What birds store before migration
Fat
30
What does birds prefer to eat before migration
Carbs
31
What is the advantage and disadvantage in using pufa
Adv - more efficent Energy expenditure | Disadvantage - more oxidative stress
32
Where sharks store fat
In their liver
33
What probably is the main ingredient in the food in the nutrition of the Monarch butterfly when it riches the north?
PUFA
34
How hibernation influence metabolism
Slows it down
35
What allows PUFA to the namneman
Maintaining liquid membranes | Easier consumption in comparison to saturated fatty acids
36
What is the most energy consuming part of hibernation
Waking up
37
What is the best way to feel more heat
Trembling the muscles
38
What should be the initiate temperature of the body in other distractions to start trembling the muscles
16 Celsius
39
What product animals use in order to get to 16 Degrees Celsius to start trembling their body
Brown fat
40
How heat is produced in the mitochondria of the brown fat cell
Uncoupled proteins helps protons to move from one mitochondria to the other without producing ATP
41
What gives the brown color to the fat cells
Mitochondria
42
Does ATP produced during the burn of brown Fat cells
No
43
How caffeine influence brown brown fat
Activates it
44
Which population has high level of brown fat
Babies animals organisms that spends a lot of time in extremely cold environment
45
What is the advantages of bets that live in hot caves
They don't need to invest a lot of energy to increase their temperature to tremble their wings
46
When animals are hibernating what is the energy source they use
Fatty acids
47
What happens to the metabolism of glucose when animals are hibernating
It shuts off
48
Which insect hibernating?
צרעה מזרחית ויתושות
49
How does hibernation in insect is called
Dipause