Questions and answers for exam Preparation

MCQs

Total Questions : 100 | Page 5 of 10 pages

Question 41. Which of the following is true regarding Prediction of β-Barrel Membrane Proteins?

For membrane proteins with β-strands only, the β-strands forming the transmembrane segment are amphipathic in nature
For membrane proteins with β-strands only, the β-strands forming the transmembrane segment are only hydrophilic in nature
For membrane proteins with β-strands only, the β-strands forming the transmembrane segment are only hydrophobic in nature
They contain six to nine residues

Discuss Question

Answer: Option A. -> For membrane proteins with β-strands only, the β-strands forming the transmembrane segment are amphipathic in nature
Answer: (a).For membrane proteins with β-strands only, the β-strands forming the transmembrane segment are amphipathic in nature

Question 42. Which of the following is untrue regarding Coils?

It is a web-based program that detects coiled coil regions in proteins
It scans a window of fourteen, twenty-one, or twenty-eight residues
It scans a window of fourteen or twenty-one residues only
It compares the sequence to a probability matrix compiled from known parallel two-stranded coiled coils

Discuss Question

Answer: Option C. -> It scans a window of fourteen or twenty-one residues only
Answer: (c).It scans a window of fourteen or twenty-one residues only

Question 43. Scanning a sequence by hydrophobicity does not reveal transmembrane β-strands.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 44. Coiled coils are super helical structures involving two to more interacting α-helices from the same or different proteins.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 45. Which of the following is true regarding Coiled coil?

They have an integral repeat of twenty residues
They have an integral repeat of seven residues
They have an integral repeat of thirty residues
The sequence periodicity doesn’t contribute in designing algorithms to predict the structural domain.

Discuss Question

Answer: Option B. -> They have an integral repeat of seven residues
Answer: (b).They have an integral repeat of seven residues

Question 46. In Multicoil, The scoring matrix is constructed based on a database of known three-stranded coiled coils only.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option B. -> False
Answer: (b).False

Question 47. Leucine zipper domains are a special type of coiled coils found in transcription regulatory proteins which contain two anti parallel α-helices held together by hydrophobic interactions of leucine residues.