Question

Which of the following processes is directly controlled by the cell nucleus?

A. osmosis because the nucleus has nuclear pores that allow water to move in and out

B. energy production because the nucleus contains mitochondria

C. cell membrane assembly because the cell membrane is made from the nuclear envelope

D. waste removal because a steady stream of molecules moves out of the nucleus

E protein synthesis because DNA in the nucleus contains the instructions for making proteins

Answer 1

Answer:

E.

Protein synthesis because DNA in the nucleus contains the instructions for making proteins

Answer 2

Protein synthesis is directly controlled by the cell nucleus because DNA in the nucleus contains the instructions for making proteins (Option E).

• During gene transcription, a fragment of DNA (which is localized in the nucleus of a cell) is used to create a messenger RNA (mRNA) molecule.

• Subsequently, this mRNA is used to create a protein in the ribosomes by a process called translation.

• For that purpose, the mRNA must leave the cell nucleus and travels to the cytoplasmatic ribosomes.

In conclusion, protein synthesis is directly controlled by the cell nucleus because DNA in the nucleus contains the instructions for making proteins (Option E).

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