What are the functions of the TRAMP complex in yeast?
What will be an ideal response?
Ans: TRAMP helps to effect mRNA degradation in 3 ways: 1) it stimulates the exonuclease activity of the exosome; 2) it has helicase activity to unwind RNA secondary structures or remove RNA-binding proteins during degradation; and 3) it adds an oligo(A) tail to the mRNA, presumably to facilitate binding of the degradation machinery.
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At term, ____________________ changes initiate and drive the events surrounding birth
Fill in the blank(s) with correct word
You are part of a team that discovers a new nitrogen-fixing bacteria in symbiosis with a plant. As you study this new bacteria, you discover that it is photosynthetic. This bacteria is likely to be:
A. cyanobacteria. B. actinobacteria. C. proteobacteria. D. none of the above.
The changes that were necessary to cope with the heavy energy demands of flight in birds include all of the following except
A. efficient respiration. B. efficient circulation. C. endothermy. D. auxiliary air sacs and hollow bones. E. a three-chambered heart.
Which is NOT a correct association?
Select one: a. adhesion junctions—skin b. adhesion junctions—bladder c. gap junctions—stomach d. tight junctions—intestines e. tight junctions—bladder