RNA STRUCTURE QUIZ

Half

One-tenth

One-fourth

One-third

All of these

the polypeptide chain is fully extended

adjacent polypeptide chains can either be parallel or antiparallel

hydrogen bonds are formed between the peptide bonds

collagen

fibrous proteins

silk protein

globular proteins

Decrease in oxygen affinity

No effect on oxygen affinity

Increase affinity in muscle cell otherwise decrease

Increase in oxygen affinity

Val-Lys-Glu-Met-Ser-Trp + Arg-Ala.

Val-Lys-Glu-Met + Ser-Trp-Arg-Ala.

Val-Lys-Glu-Met-Ser + Trp-Arg-Ala.

Val-Lys + Glu-Met-Ser + Trp-Arg-Ala.

hydrophobic residues

negatively charged residues

positively charged residues

polar residues

Gamma

Epsilon

Delta

Alfa

Val-Lys-Glu-Met-Ser-Trp + Arg-Ala

Val-Lys-Glu + Met-Ser-Trp-Arg-Ala

Val-Lys-Glu-Met + Ser-Trp-Arg-Ala

Val-Lys + Glu-Met-Ser + Trp-Arg-Ala

C20H50O20N10

C20H32O11N10

C20H40O10N10

C20H68O29N10

not present at Phe residues

more numerous than Vander Waals interactions

roughly parallel to the helix axis

analogous to the steps in a spiral staircase