GENERAL HISTOLOGY

INTRODUCTION

CELL ORGANELLES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How does the DNA of a cell make protein?
A
DNA will relay a message through the golgi apparatus and it will create the proteins
B
DNA will create the Proteins inside the nucleus
C
DNA will relay a message through the mitochondria for the cell membrane to create more proteins
D
DNA will relay a message to the rough endoplasmic reticulum and the ribosomes will create proteins
Explanation: 

Detailed explanation-1: -During transcription, DNA is used as a template to make a molecule of messenger RNA (mRNA). The molecule of mRNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. During translation, the genetic code in mRNA is read and used to make a protein.

Detailed explanation-2: -During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.

Detailed explanation-3: -The mRNA, which is transcribed from the DNA in the nucleus, carries the directions for the protein-making process. mRNA tells the ribosome (Figure below) how to create a specific protein. Ribosomes translate RNA into a protein with a specific amino acid sequence.

Detailed explanation-4: -Thus, the synthesis of a protein is governed by the information in its DNA, with the help of messengers (mRNA) and translators (tRNA). In the nucleus, DNA is transcribed to RNA. The mRNA carries the message out of the nucleus to the ribosome in the cytoplasm where the tRNA helps translate the message to make a protein.

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