Answer:
The initial step in the formation of an aminoacyl-tRNA is activation of the amino acid by reaction with ATP
Explanation:
In protein synthesis, the first step involves the formation of an aminoacyl-tRNA. This reaction is catalyzed by the the Mg²⁺-dependent enzymes known as aminoacyl t-RNA synthetases and occurs in two steps.
The first step of the reaction of the formation of an aminoacyl-tRNA is the activation of the amino acid by the attachment of an AMP molecule formed from the hydrolysis of ATP to AMP and pyrophosphate. The aminoacyl adenylate intermediate is bound to the enzyme in this initial step. Subsequently, in the second step of the activation of the amino acid, the aminoacyl adenylate intermediate is then transferred to its specific tRNA. The pyrophosphate formed in the first step is hydrolyzed to 2 phosphate molecules by a pyrophosphatase.
The overall reaction step is illustrated below:
Amino acid + tRNA + ATP -----> aminoacyl-tRNA +AMP + 2Pi
Answer:
Cell
Explanation:
A cell is the smallest unit of a living thing.
Answer:
is that a question or an answer? cuz im learning about stuff like that right now
Explanation:
Answer:
(if these are your choices)
A. They are lobed, simple leaves and are attached staggered on the branch.
B. They are not heart shaped and are attached staggered on the branch.
C. They are compound, broad leaves and are attached oppositely on the branch.
D. They are nonlobed, simple leaves and are attached oppositely on the branch.
the correct answer is D.
Explanation:
