Practice Questions

TLS Online TPP Program

#Question id: 14766

Which of the following statements does not belongs to the regulatory mechanism of the Arp2/3 complex by WASp and PI(4,5)P2?

#Unit 2. Cellular Organization

The NPF WASp is inactive due to an intramolecular interaction that masks the WCA domain.
NPF WASp is activated by a coincidence detection mechanism, it must bind both the regulatory phospholipid PI(4,5)P2 though its basic domain (B) and the membrane-bound active small G protein Cdc42-GTP through its Rho-binding domain.
When activated by the Cdc42-GTP, the intramolecular interaction in WASp is relieved, allowing the W domain to bind actin and the acidic A domain to activate the Arp2/3 complex.
The Arp2/3 branch makes a characteristic 70° angle between the old and new filaments.

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TLS Online TPP Program

#Question id: 18662

#Unit 13. Methods in Biology

Which of the following method is particularly useful for separating isoenzymes, which are different forms of the same enzyme, often differing by only one or two amino-acid residues.

TLS Online TPP Program

#Question id: 27951

#Unit 1. Molecules and their Interaction Relevant to Biology

Fructose 6-phosphate + ATP phosphate → Fructose 1,6-bisphosphate + ADP bisphosphate + ADP

a.This is a second priming reaction of glycolysis

b. This reaction can be inhibited by increasing the concentration of citrate and ATP

c. This reaction can be inhibited by increasing the concentration ADP, AMP & F2,6BP

d. This reaction can be activated by increasing the concentration ADP, AMP & F2,6BP

Choose the correct option regarding the given reaction

TLS Online TPP Program

#Question id: 10650

#Unit 10. Ecological Principles

Following some characteristic feature of K selected species

A. semelparity

B. Mate choice

C. Density independent mortality

D. large size of offspring

What is the above combination is correct?

TLS Online TPP Program

#Question id: 1327

#Unit 4. Cell Communication and Cell Signaling

Which of the following cells do not reside in the extracellular matrix?

TLS Online TPP Program

#Question id: 23627

#Unit 13. Methods in Biology

The human genome contains about ________ bp of DNA.