Peptides

Question 1

A compound containing
two amino acids is specifically called a

Answer 1

dipeptide

Question 1

is an unbranched
chain of amino acids, each joined to the next by a peptide bond

Answer 1

peptide

Question 2

three amino acids joined together in
a chain constitute a

Answer 2

tripeptide

Question 3

s loosely used to refer
to peptides with 10 to 20 amino acid residues

Answer 3

oligopeptide

Question 4

is a long unbranched chain of amino acids, each
joined to the next by a peptide bond.

Answer 4

Polypeptide

Question 5

is a covalent bond between the carboxyl group of one amino acid and the amino group of another amino acid.

Answer 5

Peptide bond

Question 6

The end with the free H3N+ group is called

Answer 6

N terminal end

Question 6

end with the free COO- group is called the

Answer 6

C terminal end

Question 7

s the portion of an amino acid structure that remains, after the release of H2O, when an amino acid participates in peptide bond formation as it becomes part of a peptide chain

Answer 7

amino acid residue

Question 8

The two best-known peptide hormones, both produced by the pituitary gland,

Answer 8

oxytocin
and vasopressin

Question 9

are pentapeptide neurotransmitters produced by the brain itself that bind at
receptor sites in the brain to reduce pain

Answer 9

Enkephalins

Question 10

Met-enkephalin

Answer 10

Tyr–Gly–Gly–Phe–Met

Question 11

Leu-enkephalin

Answer 11

Tyr–Gly–Gly–Phe–Leu

Question 12

is a protein in which
only one peptide chain is present

Answer 12

monomeric protein

Question 13

is a protein in which more than one
peptide chain is present

Answer 13

multimeric protein

Question 14

is a protein in which only amino acid residues are present

Answer 14

simple protein

Question 15

The peptide chains present in multimeric proteins are called

Answer 15

protein subunits.

Question 16

is a protein that has one or more non amino acid entities present in its structure in addition to one or more peptide chains.

Answer 16

conjugated protein

Question 18

is a non-amino acid group present in a conjugated protein.

Answer 18

prosthetic group

Question 19

contain carbohydrate groups

Answer 19

glycoproteins

Question 20

contain lipid prosthetic groups

Answer 20

Lipoproteins

Question 21

contain a specific metal, and so on.

Answer 21

metalloproteins

Question 22

These four protein structural levels, listed in order of increasing complexity, are?

Answer 22

Primary, secondary, tertiary, quaternary structure

Question 23

Who work the to determined the primary structure?

Answer 23

Frederick Sanger

Question 24

is the order in which amino acids are linked together in a protein

Answer 24

Primary protein

Question 25

is the arrangement in space adopted by the backbone portion of a protein.

Answer 25

Secondary protein structure

Question 26

Give me The two most common types of secondary structure are..

Answer 26

Alpha Helix and Beta pleated sheet

Question 27

s a protein secondary structure in which a single protein chain adopts a shape that resembles a coiled spring (helix), with the coil configuration maintained by hydrogen bonds

Answer 27

alpha helix structure

Question 28

is a protein secondary structure in which two fully extended protein chain segments in the same or different molecules are held together by hydrogen bonds

Answer 28

beta pleated sheet structure

Question 29

is the overall three-dimensional shape of a protein that results from the interactions between amino acid side chains (R groups) that are widely separated from each other within a peptide chain

Answer 29

Tertiary protein structure

Question 30

Give me the Four types of attractive interactions contribute to the tertiary structure of a protein

Answer 30

Covalent Disulfide bonds, Electrostatic attractions, hydrogen bonds, hydrophobic attractions.

Question 31

is the organization among the various peptide chains in a multimeric protein

Answer 31

Quaternary protein structure

Question 32

is a protein whose molecules have an elongated shape with one dimension much longer than the others

Answer 32

fibrous protein

Question 33

is a protein whose molecules have peptide chains that are folded into spherical or globular shapes

Answer 33

A globular protein

Question 34

is a protein that is found associated with a membrane system of a cell

Answer 34

membrane protein

Question 35

this hemoglobin has a greater affinity for oxygen than the mother’s hemoglobin

Answer 35

fetal hemoglobin