Eran Levin Fats Flashcards
Can We store fat
Yes
Can Three glyceride contain different types of fatty acids
Yes
Can animals produce omega six and omega-3 fatty acids
No
does humans able to Synthesize fatty acid with multiple double bonds
Yes but it has to take fatty acid with two double bonds and from it make one with five double bonds
Which fatty acid cause cholesterol to sink in the arteries
Omega six
Where the extension of omega fatty acids occure in our body
In the ER of the liver cells
To which pathologies stearoyl CoA desaturase is linked
Obesity and cancer
Low activity of stearoyl CoA deaturase can cause
Less ability to store fat
insulin resistance
problems with inserting PUFA in the membranes
What activates SCD enzyme
Low temperature
diet rich in carbohydrates
cholesterol vitamin a and vitamin D
What inhibits the SCD enzyme
MUFA
PUFA
Cyclopropane fatty acids
Which enzyme the cycloprpenic acid inhibits
SCD enzyme
Why cow does not consume halamit
Because it contains the Cyclopropanic fatty acid that can inhibit the activity of the SCD enzyme
Where plant store linolenic acid?
In the membrane
How plants can mobile fat if it’s not soluble
Using lecitin which is a phospholipid
Which group joins phospholipid to create lecitin
Cholin
In which type animals there are less saturated fats as we look more to the poles?
Marine mammels
Which fatty acids are the most common in membrane of animals
Stearic
Palmitic
Oleit
Linoleit acid
Which fatty acid can build up to 90% of the membrane
Oleit fatty acid
How Unsaturated fatty acid contribute to the metabolic rate
Enhances it
In high temperature, which diet was preferable to the development
Saturated fats
In low temperture which diet was preferble
PolyUnsaturated fats
How PUFA influence longevity?
due to new researches, it shortens it
Which insect nourish its offspring with milk
Roach
From Which nutrient we can produce the biggest amount of water
Fat
How does bacteria produce glucose from fatty acids
Through the glyoxalate pathway
In the glyoxalate pathway to which product that oxaloacetate can become
Glucose through gluconegenesis
What is not going away in the glyoxalate pathway
Co2
For which purposes organisms store fat
Migration, Environmental changes, nature disaster
What birds store before migration
Fat
What does birds prefer to eat before migration
Carbs
What is the advantage and disadvantage in using pufa
Adv - more efficent Energy expenditure
Disadvantage - more oxidative stress
Where sharks store fat
In their liver
What probably is the main ingredient in the food in the nutrition of the Monarch butterfly when it riches the north?
PUFA
How hibernation influence metabolism
Slows it down
What allows PUFA to the namneman
Maintaining liquid membranes
Easier consumption in comparison to saturated fatty acids
What is the most energy consuming part of hibernation
Waking up
What is the best way to feel more heat
Trembling the muscles
What should be the initiate temperature of the body in other distractions to start trembling the muscles
16 Celsius
What product animals use in order to get to 16 Degrees Celsius to start trembling their body
Brown fat
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
What gives the brown color to the fat cells
Mitochondria
Does ATP produced during the burn of brown Fat cells
No
How caffeine influence brown brown fat
Activates it
Which population has high level of brown fat
Babies
animals
organisms that spends a lot of time in extremely cold environment
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
When animals are hibernating what is the energy source they use
Fatty acids
What happens to the metabolism of glucose when animals are hibernating
It shuts off
Which insect hibernating?
צרעה מזרחית ויתושות
How does hibernation in insect is called
Dipause
