Question

which side chains are hydrophobic?
how do you know if a side chain is hydrophobic or hydrophilic ?

picture attached. I know which would be the right answer but im not sure how you could determine it.

Answer 1

phobic from phobia meaning afraid of
philic from philia meaning affinity/love for

the hydrophobic is the part that's saturated or non-polar

Answer 2

the question is which of the amino acids have a hydrophobic side chain? (picture attached) and they are all single bonds

Answer 3

well I guess you will have to learn a lot since you can't tell right away

Answer 4

I think there are 6 hydrophobic amino acids.

Answer 5

would i have to memorize them ?

Answer 6

If you plan on taking upper-division biochemistry, yes.

Answer 7

It would be very wise to memorize all 20 AND their structures as well as their properties i.e., hydrophobic, hydrophilic, acidic, basic etc if you are a biochemistry-chemistry major and intend to pursue biochemsitry with chemistry emphasis and not the biochemistry-biology emphasis.

Answer 8

so thats the only way of knowing?

Answer 9

well a few systematic way of learning will help too

Answer 10

you can start from knowing the functional groups and their characteristics

Answer 11

thank you so much for the document!

Answer 12

http://finedrafts.com/articles/100/functional-groups
and watching this lecture will help A LOT!

Answer 13

thanks a bunchhhhhhhhhhh

Answer 14

Yeah, there's a general formula for amino acids, all you have to do is memorize their side chains.