ch 3 part 3 reviews

Question 1

protein function :

Answer 1

enzyme , hormonal , structure , defense , contractile , storage , transport

Question 2

protein

Answer 2

Consist of monomers called amino acids linked together by covelant bond called peptide bond

Question 3

continuous, unbranched chain of amino acids joined by peptide bonds

Answer 3

polypeptide

Question 4

amino acid structure :

Answer 4

Question 5

amino acid :

Answer 5

20
consist of carbon bound to :
hydrogen
carboxyl group
amino group
unique R group

Question 6

unique R group :

Answer 6

determine the properties of the amino acid

Question 7

20 amino acids commonly found in proteins and had a different R group
(true or false )

Answer 7

true

Question 8

peptide bond :

Answer 8

covelant bond between
carboxyl carbon and nitrogen amino acid 2
carboxyl C- and N- are terimus of protein

Question 9

protein’s function is influenced by its :

Answer 9

three-dimensional shape.

Question 10

levels of protein structure :

Answer 10

primary structure
secondary structure
tertiary structure
Quaternary structure

Question 11

primary structure

Answer 11

like sequense of amino acid like a sequense of letters

Question 12

quaternary structure is _________________
called ________________
can be __________ or ___________

Answer 12

two or more polypeptide chain bond togather
subunits
the same or different

Question 13

secondary structure

Answer 13

hydrogen bond between amino acid can cause twisting or folding
or
Segments of the polypeptide chain form coils or folded patterns as a result

Question 14

tertiary structure
picture is important

Answer 14

polypeptide chain take on a complex three dimensional shape due to the interaction of its slide
or
Main, three-dimensional shape of a polypeptide chain.
determine function
Hydrogen bonds,
disulfide bridges,
vanderwaals forces,
hydrophobic interactions
, ionic interactions

Question 15

secondary structure example :

Answer 15

a ; helice
b ; pleated