The Earth's surface releases __________ that is absorbed by the atmosphere, stabilizing or raising atmospheric temperature.
A. fire
B. ultraviolet radiation
C. near-ultraviolet radiation
D. activation energy
E. long-wave infrared radiation
E. long-wave infrared radiation
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What molecules in the spliceosome catalyze the intron removal reactions?
A) RNA polymerases B) ribozymes C) tRNA D) introns
At the venous end of a capillary, the blood pressure is ____ the osmotic pressure and fluid ____ the blood vessel
A. lower than; moves into B. higher than; moves into C. lower than; moves out of D. higher than; moves out of E. equal to; remains within
Mammalian genomes all have a number of genes for globin polypeptides. Several of these genes are functional, but several are never expressed. What are the nonfunctional ones known as?
What will be an ideal response?
Which of the following is a difference between gram+ and gram- cells?
a. gram+ cells contain less peptidoglycan than gram- cells b. gram- cell walls contain more peptidoglycan than gram+ cells c. only gram+ cells have peptidoglycan d. only gram- cells have a lipopolysaccharide layer