#Question id: 2029
#Unit 4. Cell Communication and Cell Signaling
B-cell receptor consist of membrane-bound immunoglobulin and a small heterodimer protein required for signaling. Which of the following is the heterodimer protein?
#Question id: 4460
#Unit 3. Fundamental Processes
During initial transcription, the active center of RNA polymerase is translocated forward relative to the DNA template and synthesizes short transcripts before aborting, then repeats this cycle until it escapes the promoter. Three models have been proposed to account for this;
i. Polymerase moves along the DNA.
ii. The front part of the enzyme moves along the DNA, but because of a flexible region within the enzyme, the back part of the enzyme can remain stationary at the promoter.
iii. The enzyme remains stationary and pulls the DNA into itself.
#Question id: 4386
#Unit 3. Fundamental Processes
Which one of the following techniques would be best suited to follow how a thyroxine-bound receptor translocates from the cytoplasm to its DNA response element?
#Question id: 23659
#Unit 13. Methods in Biology
#Question id: 12803
#Unit 10. Ecological Principles