Gels of 15% polyacrylamide are useful for separating proteins in the range Mr = 100,000 to 10,000,  while a 7.5% gel are used to separate 

TLS Online TPP Program

#Question id: 4291

#Unit 3. Fundamental Processes

There are two classes of release factors. Match the following

A. Class I release factors	1. recognize the stop codons and trigger hydrolysis of the peptide chain from the tRNA in the P-site.
B. Class II release factors	2. stimulate the dissociation of the class I factors from the ribosome after release of the polypeptide chain.
C. RF1	3. recognizes the stop codon UAG
D. RF2	4. recognizes the stop codon UGA.
E. RF1 & RF2	5. UAA

TLS Online TPP Program

#Question id: 10432

#Unit 6. System Physiology – Plant

Phytochrome interacting factors (PIFs) act as negative regulators of photomorphogenesis such as;

a) Most PIFs are constitutive activators of genes that are expressed in the dark or in response to shade

b) Most PIFs are constitutive repressor of genes that are expressed in the dark or in response to shade

c) In the light, Pfr promotes the degradation of the PIFs, blocking the transcription of skotomorphogenesis genes

d) In the light, Pfr promotes the activation of the PIFs, blocking the transcription of skotomorphogenesis genes

Which of the following combinations is correct about PIFs?

TLS Online TPP Program

#Question id: 26360

#Unit 2. Cellular Organization

In the yeast the isolation of double mutants can be analyzed by

TLS Online TPP Program

#Question id: 690

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds?

TLS Online TPP Program

#Question id: 830

#Unit 1. Molecules and their Interaction Relevant to Biology

The polypeptide can assume with each point on it corresponding to a specific conformation, number of different conformations can assume with that energy, A folding protein must contain