Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
What are the functions of lipids? (5) |
1) Long term energy storage, 2) Form cell membrane (phospholipids), 3) Messaging (hormones), 4) Insulation, 5) Cushioning of internal organs |
|
|
What are the different types of lipids? (5) |
1) fat: triglyderide/triacylglycerol, 2) phospholipid, 3) steriod, 4) wax, 5) carotenoid |
|
|
Why are lipids good for long term energy source? |
They contain many high energy bonds between carbon and hydrogen and they contain twice as much energy per gram than carbohydrates. This makes it a more compact form of storage than carbohydrates. |
|
|
In which type of cells do animals store fats? |
They store fats in adipose tissue. |
|
|
What are some examples of messaging hormones? |
Testosterone, estrogen, insulin, and cortisol. |
|
|
What are triglycerides/triacylglycerols composed of? |
1 glycerol backbone and 3 fatty acid chains. |
|
|
What is the structure of a glycerol molecule? |
Contains 3 carbons, each carbon attached to an alcohol group. The alcohols become sites for condensation reactions (to connect the glycerol and fatty acid chains). |
|
|
What is the structure of a fatty acid? |
An carbon chain with no branches and a carboxyl group at one end of the chain. |
|
|
How can fatty acid change differ from each other? |
1) In length - carbon chains can be from 4 to 24 carbons long 2) In saturation - saturated, monounsaturated, polyunsaturated |
