Protein Structure Self-assessment

7 Questions | By Rohagan | Updated: Dec 3, 2013 | Attempts: 688

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1.

All proteins within the human body are made up of how many amino acids?
- A.
  
  18
- B.
  
  20
- C.
  
  34
- D.
  
  30
Correct Answer
B. 20
2.

Where does the peptide bond take place which joins two amino acids together and what is given off as a result?
- A.
  
  Between the carboxylic acid and the amide, water
- B.
  
  Between the carboxylic acid and the amide, hydrogen
- C.
  
  Between two carboxylic acid groups, water
- D.
  
  Between two amide groups, hydrogen
Correct Answer
A. Between the carboxylic acid and the amide, water
3.

In the alpha helix structure why is every turn made up of three amino acid residues and 2 atoms from the next turn?
- A.
  
  To prevent hydrogen bonding within the molecule
- B.
  
  So the oxygen of the carboxyl group can form a hydrogen bond with a nitrogen atom
- C.
  
  To allow sufficient space for the protein to form a beta pleated sheet
- D.
  
  So that the C=O bond always lines up with the N-H bond and therefore hydrogen bonding can occur
Correct Answer
D. So that the C=O bond always lines up with the N-H bond and therefore hydrogen bonding can occur
4.

There is intramolecular hydrogen bonding in the beta pleated sheet structure of a protein
- A.
  
  True
- B.
  
  False
Correct Answer
B. False
5.

What are the strongest bonds holding the tertiary structure in place and where are they formed?
- A.
  
  Covalent disulfide bridges between two cysteine thiol groups
- B.
  
  Covalent disulfide bridges between two histidine thiol groups
- C.
  
  Ionic bonds between arganine and aspartic acid amino acid resudues
- D.
  
  Van Der Waals interactions between adjacent amino acids
Correct Answer
A. Covalent disulfide bridges between two cysteine thiol groups
6.

What are the sections of a protein called which can act independently of the rest of the protein in its tertiary structure?
- A.
  
  Dipoles
- B.
  
  Globules
- C.
  
  Domains
- D.
  
  Enantiomers
Correct Answer
C. Domains
7.

What word can describe a protein with a quaternary structure of only a few sub units
- A.
  
  Multimeric
- B.
  
  Oligomeric
- C.
  
  Multidimensional
- D.
  
  Omnipotent
Correct Answer
B. Oligomeric

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Current Version
Dec 03, 2013

Quiz Edited by
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Dec 03, 2013

Quiz Created by
Rohagan

Protein Structure Self-assessment

All proteins within the human body are made up of how many amino acids?

Where does the peptide bond take place which joins two amino acids together and what is given off as a result?

In the alpha helix structure why is every turn made up of three amino acid residues and 2 atoms from the next turn?

There is intramolecular hydrogen bonding in the beta pleated sheet structure of a protein

What are the strongest bonds holding the tertiary structure in place and where are they formed?

What are the sections of a protein called which can act independently of the rest of the protein in its tertiary structure?

What word can describe a protein with a quaternary structure of only a few sub units