#Question id: 2578
#Unit 2. Cellular Organization
Following statements are regarding to proteins which involve actin filament assembly.
A. To nucleate the assembly of branched actin, Arp2/3 needs to be activated by interacting with a nucleation promoting factor (NPF), in addition to associating with the side of a pre-existing actin filament.
B. The NPF WASp is inactive due to an intramolecular interaction that masks the WCA domain.
C. Two NPFs each bind an actin subunit at their WH2 domains, and together, they activate the Arp2/3 complex through its interaction with their connector and acidic domains.
D. The NPF WASp is activated by a coincidence detection mechanism by which intramolecular interaction in WASp is relieved, allowing the W domain to bind actin and the acidic A domain to activate the Arp2/3 complex.
Which of the following statements represents regulation of the Arp2/3 complex by NPF?
#Question id: 4766
#Unit 8. Inheritance Biology
In soybeans, resistance to sudden death syndrome (SDS) is inherited as a dominant condition. In some cases, individuals that are not resistant to SDS (but whose parents were) can pass the trait on to their progeny. This is an example of which of the following?
#Question id: 31310
#Unit 3. Fundamental Processes
#Question id: 29088
#Unit 10. Ecological Principles
Following table shows the number of individuals of different species in two communities, X and Y. Use Jaccard index determine the degree of similarity between X and Y community?
#Question id: 3727
#Unit 3. Fundamental Processes
Fragments on the lagging strand are joined by the enzyme ________.