B R R |7:;‘JL.“ i L‘( fh""“th i Jn\ R
b
Amine functional group
T
Scorefor this quiz: 5 out of 5
BCHEM M3 0UZ
e
This attempt took 57 minutes.
Question 1
0/0 pts
Name three different functions of proteins.
Your Answer:
m o l e c u l e s ar ou nd th e ce ll an d o r g a n i s m
Tr an sp or t - pr ot ei ns he lp
i c a t e m e s s a g es b e t w e e n ce ll s
Hormone s - th es e mo le cu le s c o m m u n
s p e e d up , or ca ta ly ze , ch em ic al re ac ti on s
Cata ly si s- e n z y m e s
st ru ct ur e, a n d p r o t e c t i o n
Transport, hormones, catalysis,
| Question 2
% 0/0 pts
What fun c t i o n d o e s a p r o t e a s e h a v e ?
1’ Your Answer:
ei ns in to sm al le r po ly pe pt id es or am in o ac id s
It is an enzy me th at br ea ks do wn pr ot
’ cata ly si s. It d e g r a d e s pr ot ei ns .
Question 3
0/0 pts
What is th e f u n c t i o n of h o r m o n e s ?
Your Answer:
mm un ic at e me ss ag es be tw ee n ce ll s
These molecules co
These proteins co mm un ic at e fr om on e cel l to an ot he r
Question 4
0/0pts
What are the functional groups common to all amino acids?
Your Answer;
, hctional group
Aylic acid functional group
amine and carboxylic acid
Question 5
0/0 pts
Briefly describe the five major groupings of amino acids.
Your Answer:
ami no aci ds tha t are rel ati vel y sma ll, per mit tin g tem to int era ct wit h
1. Non-polar aliphatic: straight chain
other groups
ins of the se co mp ou nd s con tai n a ring of car bon s as an aro mat ic
2. Non-polar aromatic: the side cha
functional group; they are more rigid
sid e cha ins tha t hav e a dip ole , and mos t can hyd rog en bon d
3. Polar, but neurtral, amino acids: contain
pKa val ues sma lle r tha n 7, whi ch ind ica tes the y los e the ir
4. Acidic amino acids: have side chains with
proton in the acidic pH range
gre ate r tha n pH= 7, whi ch me an s the ir sid e cha ins are
5. Basic amino acids: have a pKa that is near or
normally positively charged
1) non pol ar, ali pha tic 2) non pol ar and aro mat ic 3) pol ar but
The amino acids are grouped into
neutral, 4) acidic, and 5) basic.
Question 6
0/0 pts
Wha t is the name , one- lett er abbr evia tion , and thre e-le tter abbr evia tion of the foll owin g ami no acid ?