The polymerization of pure G-actin in vitro proceeds in three phases.

Column I	Column II
A. nucleation phase	i. G-actin monomers exchange with subunits at the filament ends, but there is no net change in the total length of filaments
B. elongation phase	ii. marked by a lag period in which G-actin subunits combine into an oligomer of two or three subunits
C. steady-state phase	iii. the short oligomer rapidly increases in length by the addition of actin monomers to both of its ends

Which of the following represent correct match?

TLS Online TPP Program

#Question id: 23242

#Unit 2. Cellular Organization

Carboxysomes containing bacteria are nitrifying bacteria. Which among the following are examples of such bacteria?

1.Cyanobacteria 

2.E. Coli

3.Thiobacilli

Mark the option with correct combination?

TLS Online TPP Program

#Question id: 4165

#Unit 3. Fundamental Processes

Which is true about proofreading activity during the synthesis of aminoacyl-tRNAs?

TLS Online TPP Program

#Question id: 3988

#Unit 3. Fundamental Processes

The tryptophan operon of E. coli is repressed by tryptophan added to the growth medium.  The tryptophan repressor probably:

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#Question id: 6629

#General Aptitude

If DEER = 12215 and HIGH = 5645, how will you code HEEL ?

TLS Online TPP Program

#Question id: 27080

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statement about Vander-wall interaction  

1. Van der Waals potential (E_vdw) is the sum of all interactions over all atoms

2. Van der Waals potential (E_vdw)  is calculated by

3. This type of interaction is often called a 6–12 interaction, or the Leonard Jones potential.

4. Van der Waals forces are extremely weak, especially when compared with other forces influencing protein conformation