Which of the following steps in prokaryotic translation takes place first?
A) aminoacylation of the tRNA molecule
B) joining of 30S and 50S ribosomal subunits into 70S ribsomes
C) binding of mRNA to a ribosome
D) attachment of fMet aminoacyl tRNA
E) catalysis by RNA polymerase
E) catalysis by RNA polymerase
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Answer the following statements true (T) or false (F)
1. Saltwater fishes are hypoosmotic. 2. The number of aquatic species increases in acidic waters. 3. Temperature tends to decline with longitude. 4. Rain shadows are found on the windward sides of mountains. 5. Land next to the sea has more variable climate than land farther from the sea.
Stacy is studying the structure of plant cell walls. Thus, she is studying __________
a. a carbohydrate b. a protein c. glucose molecules d. both a carbohydrate and glucose molecules
Monocots and eudicots differ in how xylem and
phloem are distributed in ground tissue, in the number of petals in flowers, and in the number of __________. Fill in the blank(s) with the appropriate word(s).
The Kirby-Bauer test uses an agar surface seeded with the test bacterium, and small discs containing a specific concentration of several drugs are placed on the surface.
Answer the following statement true (T) or false (F)