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how to choose and solve these 4 multiple choices about biochem? THANKS 1. Which type of...

how to choose and solve these 4 multiple choices about biochem? THANKS

1. Which type of bonding is catalyzed by aminoacyl-tRNA-synthetases to form between amino acids and tRNAs?

A.Hydrogen bond

B.Salt bridge

C.Peptide bond

D.Ester bond

E.Glycosidic bond

2. What is added to methionine when it is used as the start codon?

A.Phosphate

B.Formyl

C.N-acetyl

D.Sulphate

E.rRNA

3. In translation (initiation, elongation and termination), the energy source is provided by ______.

A.ATP

B.TTP

C.GTP

D.CTP

E.UTP

4. Which of the following statements is correct regarding transcription and translation in eukaryotes?

A. During transcription, an mRNA molecule is synthesized from the DNA molecule.

B. Translation takes place in the nucleus, while transcription takes place in the cytoplasm.

C. During protein synthesis, translation occurs prior to transcription.

D. During translation, a DNA sequence is used to synthesize an amino acid sequence.

E. Transcription and translation occur in nucleus.

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