Buoyancy in pelicans is achieved by:
a. subcutaneous air sacs.
b. fatty tissue.
c. low density tissues.
d. long feathery appendages.
e. storing wax and oils.
A
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The term that describes the movement of Earth's crust and includes the process of subduction is ____
Fill in the blank with the appropriate word.
The origin of replication in bacteria is called OriC
Indicate whether the statement is true or false
Using the techniques of genetic engineering, you design a cytoplasmic protein you want to accumulate within the ER of yeast cells. To accomplish this goal, you need to
A) do nothing; all proteins go through the ER. B) incorporate appropriate mannose-6-phosphate groups. C) incorporate the appropriate DNA sequence(s) to create signal sequences into mature peptide. D) incorporate radioactive amino acids into the protein. E) incorporate the appropriate DNA sequence(s) to create signal sequences into the mature peptide.
How is the splicing of U2-dependent introns different from that of U12-dependent introns?
a. U12-dependent introns have no branch site. b. U2-dependent introns have longer consensus sequences at the splice sites. c. Most of the snRNPs in the spliceosomes are different. d. The SR proteins in the spliceosomes are different. e. U12-dependent introns are self-splicing.