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.

More Questions

TLS Online TPP Program

#Question id: 426

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement is not true about catabolic pathways?

TLS Online TPP Program

#Question id: 18389

#Unit 12. Applied Biology

How the degradation of alkanes and aromatic hydrocarbons generally occurs.

1. Oxygenase enzyme

2. β-oxidation to yield acetyl CoA

3. Hydrogenation reaction

4. Carboxylation

Which of the following are correct?

TLS Online TPP Program

#Question id: 15001

#Unit 8. Inheritance Biology

You cross true breeding lizards that are either green or albino and discover that all the offspring are striped green and white. Which is the most likely result if you cross two striped lizards?

TLS Online TPP Program

#Question id: 1417

#Unit 4. Cell Communication and Cell Signaling

Which of the following triggers apoptosis?

TLS Online TPP Program

#Question id: 9186

#Unit 9. Diversity of Life Forms

A pathogenic fungus invades a plant. What does the infected plant produce in response to the attack?