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Cells in culture will absorb amino acids form the surround culture medium. If radioactively labelled glycine,
an amino acid, is provided in the culture medium, in which organelle will radioactivity be found first
a. Ribosomes
b. Nucleus
Lysosomes
d. Golgi apparatus

Respuesta :

KerryM

Answer:

A

Explanation:

Radioactively labelled amino acids will be found in the ribosomes. These are the organelles that are the site of protein synthesis.

Amino acids are taken up into the cytoplasm from the surrounding cell culture medium. Amino acids are then bound to tRNAs (with the enzyme aminoacyl-tRNA synthetases) and taken to the ribosome, where they are assembled into a polypeptide chain by the translation machinery.

To study the effects of radioactivity in the cell on amino acids, one should know the different functions of ribosomes in the cells.

The cells have different organelles carrying out different functions, such as digestion, protection, protein synthesis, and DNA replication.

Functions of Ribosomes are:

  • Ribosomes are the site of protein synthesis. Ribosomes are involved in the decoding of the message and the formation of peptide bonds.

  • The radioactive glycine when substituted in cell culture, will be observed first in the ribosomes. Ribosomes are the site where the instructions for protein synthesis are carried out, thus, the radioactive amino acid will be observed in ribosomes.

Thus, the radioactive amino acids will be taken up into the cell and will be bounded by tRNAs. The tRNAs will deliver the amino acid to ribosomes, where they will be assembled and result in the polypeptide chain.

Therefore, the correct answer is Option A.

Learn more about ribosomes here:

https://brainly.com/question/241631

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