An Hfr strain is produced when
A. an F episome integrates into the E. coli chormosome
B. an F episome leaves the E. coli chromosome.
C. an F episome is transferred to a new cell.
D. an F episome leaves the host chromosome and removes some of the host chromosome.
A
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All of the following are part of a prokaryotic cell EXCEPT _____
A) DNA B) a cell wall C) a plasma membrane D) ribosomes E) an endoplasmic reticulum
An mRNA sequence is 5?-AUG GGC ACU CAU ACU UAA-3?, where AUG is the start codon and UAA is the stop codon. How many distinct aminoacyl-tRNA synthetases are required to translate the mRNA sequence?
A. 2 B. 3 C. 4 D. 5 E. 6
Reactions that reach an equilibrium point are reversible
Indicate whether the statement is true or false.
An organism's structure and ________ reflect adaptations to its particular environment
Fill in the blank(s) with correct word