Lipids

Question 1

lipid

Answer 1

a molecule that does not dissolve in water

Question 2

are polar hydrocarbons philic or phobic

Answer 2

hydrophilic

Question 3

are non-polar hydrocarbons philic or phobic

Answer 3

hydrophobic

Question 4

what are triglycerides made of

Answer 4

glycerol and 3 fatty acid tails

Question 5

what are the 3 fatty acids made of

Answer 5

hydrocarbon chains with a carboxyl group at the end

Question 6

saturated fatty acid

Answer 6

single bond

Question 7

unsaturated fatty acid

Answer 7

1 or more double bonds

Question 8

essential fatty acids

Answer 8

essential, the animal must consume them, cannot synthesize it themself

Question 9

examples of lipids

Answer 9

waxes in plants and aquatic animals

Question 10

phospholipids (talk abt the parts and if they’re polar/nonpolar and if they’re philic/phobic)

Answer 10

top of head - phosphate, hydrophilic, polar
end of head - glycerol, hydrophilic, polar
one tail - sat. FA, hydrophobic, nonpolar
other tail, unsat FA, hydrophobic, nonpolar

Question 11

amphipathic def and tell me what has this quality

Answer 11

has both hydrophilic and hydrophobic behaviors, example is phospholipids

Question 12

steroid

Answer 12

a lipid containing a specific “four-fused-rings” structure. (aromatic)

Question 13

fat

Answer 13

a lipid comprised of three fatty acids - these are hydrocarbons with a COOH group on one end - attached to a glycerol (a 3-carbon compound)