Reading...
Play button
Play button
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;
32 Cards in this Set
- Front
- Back
|
What are fatty acids?
|
Long chain carboxylic acids
|
|
|
Does a saturated fatty acid have a double bond?
|
No. only unsaturated fatty acids have double bonds?
|
|
|
Palmitic Acid has a numeric symbol of 16:0? What does this mean?
|
16 carbon chains, with no double bonds so is saturated fatty acid.
|
|
|
Linolenic acid has a numeric symbol of 18:3 (9,12,15). What does this mean?
|
18 carbon chains, 3 double bonds from carboxyl end (9,12,15 carbons), unsaturated.
|
|
|
Are fatty acids soluble in water?
|
No
|
|
|
Are Fatty acids Hydrophilic or hydrophobic?
|
Hydrophobic
|
|
|
What do fatty acids combine with to be able to be soluble?
|
They attach to hydrophilic proteins
|
|
|
Are fatty acids soluble in ether, chloroform, benzene? If so, why?
|
Yes as they are non-organic solvents and are non-polar
|
|
|
What are the 3 main roles that lipids play in the body?
|
1, Storage of energy 2. Membrane Components 3. Messengers
|
|
|
What is the role that fatty acids play as storage of energy?
|
They are quick reserves of energy when energy intake is low
|
|
|
What is the role that fatty acids play as membrane components?
|
They segregate areas of water in the body by forming membranes
|
|
|
What is the role that fatty acids play as messengers?
|
1. Primary meesengers (steroid hormones) - deliver messages from one part of body to another. 2. Secondary messengers (prostaglandins), mediate hormonal response
|
|
|
What are simple lipids made of?
|
They are esters of Fatty acids with Alcohol groups attached
|
|
|
What are complex lipids made of?
|
They are esters of Fatty acids with Alcohol groups and additional groups attached
|
|
|
Are unsaturated fatty acids subject to Oxidation?
|
Yes
|
|
|
Are some Omega-3 and Omega-6 essential fatty acids?
|
Yes
|
|
|
What are examples of essential Fatty acids?
|
Omega-3 - linolenic acid, Omega-6 - linoleic acid
|
|
|
Can fatty acids be used for energy?
|
Yes
|
|
|
T/F - Saturated fatty acids end with -enoic
|
False they end in -anoic
|
|
|
Palmitolic acid - 16:1;9 is a w-7 series fatty acid. Why?
|
16 carbons, 1 double bond at carbon 9 from the carboxlic end
|
|
|
Palmitolic acid - 16:1;9 is a w-7 series fatty acid. What is it's systematic name and why?
|
9 Hexa decenoic acid. 9 is the place of the 1st double bond from the carboxylic end. Hexadec - because of 16 carbons, enoic because it is unsaturated
|
|
|
How many carbons does glycerol have?
|
3
|
|
|
What are attached to the carbons in glycerol?
|
3 hydroxl groups (OH)
|
|
|
How can you distinguish between fats and oils?
|
Fats - generally from animals, solids and saturated. Oils - generally from plants, unsaturated and and liquid at room temperature
|
|
|
Describe the structure triglycerides
|
3 fatty acids attached to a glycerol backbone by ester bonds
|
|
|
Name 2 essential fatty acids
|
Linolenic and linoleic acid
|
|
|
Describe fatty acids
|
Long chain carboxlyic acids with an even no. of carbons
|
|
|
Name 4 important fatty acids for humans?
|
Palmitic acid, stearic acid, linolenic acid, linoleic acid, arachidonic acid, myristic acid, lauric acid,oleic acid, palmitoleic acid
|
|
What is this?
What is usual group that replaces Z? |
Glycerophospholipids, Amino alcohol group
|
|
|
Where are glycerophospholipds found in the body?
|
In cell membranes, and myelin sheaths
|
|
|
Are glycerophosoholipids soluble in water?
|
Yes and they make great emulsifiers
|
|
|
What are examples of important glycerophospholipids?
|
Lecithin, cepahlins
|
