Pull-down assays using proteins that ONLY bind to the GTP-bound version of the small G-protein can be used to detect when small G proteins like Rac1 have been activated by various growth factors.  You were given two lysates, one having been treated with platelet-derived growth factor (PDGF) and the other not treated with PDGF. This method is similar to performing co-IPs, so based on that knowledge, which of the following steps is erroneous?

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#Question id: 1696

#Unit 4. Cell Communication and Cell Signaling

TCR recognition of peptide-MHC class II depends on:

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#Question id: 18755

#Unit 13. Methods in Biology

Once the double stranded molecule with the mutation is introduced into E. coli for replication, how many types of molecules are produced?

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#Question id: 12114

#Unit 10. Ecological Principles

Researchers have found that a region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This annual enlargement of brain tissue is probably associated with the annual

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#Question id: 10413

#Unit 6. System Physiology – Plant

Following are certain statements are related to the effect of red and far-red light;

a) under a dense canopy much of the red light is absorbed by plant pigments, resulting in transmittance of mostly far-red light

b) Pr (red) has highest photon flux at 680 nm while Pfr (far-red) has highest photon flux at 730nm

c) Pfr far-red light–absorbing form, which is considered to be the physiologically active form of phytochrome

d) R:FR ratio is strongly affected by the presence of a canopy because chlorophyll absorbs far-red but not red light

Which one of the combinations of above statements is incorrect?

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#Question id: 4476

#Unit 3. Fundamental Processes

Regulatory elements include promoter proximal elements, upstream activator sequences (UASs), enhancers, and a series of other element