Exam 1

Question 1

What term applies to amino acids, nucleotides, and monosaccharides that are the building block components of their respective polymers

Answer 1

Monomers

Question 2

What is that characteristic bond that links monosaccharides to form polysaccharides

Answer 2

Glycoside bond

Question 3

What term describes stereoisomers of a given molecule that form mirror images of each other

Answer 3

Enantiomer

Question 4

Any ol’ biochemistry student can count carbons in Greek , what Greek letter designates the amide carbon at the end of the R group of glutamine

Answer 4

Ś

Question 5

What term describes an incomplete amino acid constituent of a poly peptide

Answer 5

Residue

Question 6

What enzyme located in the large subunit of the ribosome, catalyzes peptide bond formation

Answer 6

Peptidyl transferase

Question 7

By convention, depicting peptides from left to right (beginning to end) what term describes the end with the free amino group

Answer 7

N terminal

Question 8

What common protein the major constituent of spider silk is an example of layers of polypeptides in beta conformation ( pleated beta sheet)

Answer 8

Fibrion

Question 9

What term describes a poly peptide constituent of a protein that consists of more than one polypeptide

Answer 9

Subunit

Question 10

What term describes a double or super Amino acids such as when cysteine is formed by linking two cysteine monomers by disulfide bond

Answer 10

Dimeric

Question 11

What left hand secondary structure characterizes indeed it is unique to a given polypeptide chain of collagen

Answer 11

Alpha Collagen helix

Question 12

What word describes the opposite but also more stable direction taken by adjacent polypeptide chain in the beta conformation ( pleated beta sheet)

Answer 12

Anti parallel

Question 13

Which major category of protein is usually dominated by a single type of secondary structure within a constituent polypeptide

Answer 13

Fibrous protein?

Question 14

What secondary structure is found where a polypeptide makes a sharp 180 hairpin turn

Answer 14

Beta bend

Question 15

What common fibrous protein is characterized by two polypeptide of right-hand alpha helices wrapped in a left hand supercoil

Answer 15

Keratin

Question 16

All of the covalent bonds that link amino acid residues of poly peptide including amino acids and disulfide bonds

Answer 16

Primary structure

Question 17

Along main chain of polypeptide

Answer 17

Amino acid sequence

Question 18

Rotation of 360 (theoretically) but interrupted by bulk and charge of R group

Answer 18

Bond rotation

Question 19

Between Alpha Carbon & Amino group (H3N+) of residue

Answer 19

phi (φ)

Question 20

Between alpha carbon and carbonyl (coo-) group of residue

Answer 20

psi (ψ)

Question 21

Covalent bond between sulfur atoms of cysteine residue with same or different adjacent polypeptide

Answer 21

Disulfide Bond

Question 22

Super amino acid also known as cystine WITHOUT the C

Answer 22

Dimeric

Question 23

Any change in native conformation produced by changes in decrease in protein function

Answer 23

Denaturation

Question 24

Weakens bonds by increasing thermal agitation

Answer 24

Heat

Question 25

Affect ionizable bonds (acid, base)

Answer 25

pH changes

Question 26

Changes polarities , disrupts hydrophobic forces

Answer 26

Solvent and other chemicals

Question 27

Normal / functional conformation of a protein as it exists under ordinary physiology conditions

Answer 27

Native conformation