Amino Acid Questions 2

Answer the following questions about the amino acids found in the body.
Quiz by kitkat90009
Rate:
Last updated: February 22, 2020
First submittedFebruary 22, 2020
Times taken1
Report this quizReport
4:30
Enter answer here
0
 / 18 guessed
The quiz is paused. You have remaining.
Scoring
You scored / = %
This beats or equals % of test takers also scored 100%
The average score is
Your high score is
Your fastest time is
Keep scrolling down for answers and more stats ...
 
Answer
What shape does a peptide bond have
Flat
According to Rule 1, peptide bonds have their shape as if the CN link is a .... bond
Double
The CO and CN groups always form the ...... number of hydrogen bonds
Maximum
There is ..... rotation about the alpha CN and alpha CC bonds
Free
The angle about the alpha CN bond is represented by....
Phi
The angle about the alpha CC bond is represented by.....
Psi
In an alpha helix, the polypeptide twists into a .....
Righthanded screw
In an alpha helix, all of the amino acids can form ..... bonds with each other
Hydrogen
Which amino acid residue destabilises an alpha helix
Proline
 
Answer
Together, which amino acid residues destabilise an alpha helix due to their negative charge
Aspartic acid glutamic acid
How many residues are there per turn of an alpha helix
3.6
What is the rise per residue in an alpha helix
1.5 angstroms
Hydrogen bonds are between the CO of one residue and the NH of the ...... residue
n+4
The peptide bond has a ..... moment, i.e. is polar
Dipolar
What is the rise per residue of a parallel beta pleated sheet
3.25 angstroms
What is the rise per residue of an antiparallel beta pleated sheet
3.47 angstroms
Which two amino acids are prevalent in beta turns
Glycine proline
In a beta turn the carbonyl C of one residue is H bonded to amide proton of a residue ...... residues away
3
No comments yet