Which of the following statements about aminoacyl-trna synthetases is false?

a) some of the enzymes have an editing/proofreading capability.
b) the enzyme attaches an amino acid to the 3' end of a trna.
c) the enzyme splits atp to amp + ppi.
d) the enzyme will use any trna species but is highly specific for a given amino acid.
e) there is a different synthetase for every amino acid.

The correct answer is option D) "The enzyme will use any tRNA species but is highly specific for a given amino acid".

Explanation:

Aminoacyl-tRNA synthetases, also known az tRNA-ligase, are the enzymes that catalyze the attachment of the appropriate amino acid onto its tRNA. It is false to affirm that these enzymes will use any tRNA species but is highly specific for a given amino acid. In fact, aminoacyl-tRNA synthetases are highly specific for both, tRNA species and amino acids. Kinetic studies show that aminoacyl-tRNA synthetases reject wrong tRNAs during catalysis.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.