AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Proteins are formed in the cytoplasm of cell using genetic instructions from DNA, which is located in the cells nucleus. Which of the following best explains how the genetic information gets to the site of protein synthesis?
A
DNA is divided during mitosis, and one strand travels outside the nucleus to bind with RNA and form a protein
B
DNA is copied to make mRNA. The mRNA leaves the nucleus and goes to the ribosomes, where the information is used to guide protein synthesis.
C
Genetic information travels from DNA in the nucleus along a strand of mRNA that is connected to ribosomes in the cytoplasm where proteins are made.
D
The genetic code is transferred to ribosomes on tRNA molecules, which can pass through the nuclear membrane.
Explanation: 

Detailed explanation-1: -Proteins are formed in the cytoplasm of cell using genetic instructions from DNA, which is located in the cells nucleus. Which of the following best explains how the genetic information gets to the site of protein synthesis? DNA is copied to make mRNA.

Detailed explanation-2: -In biology, the process by which a cell makes an RNA copy of a piece of DNA. This RNA copy, called messenger RNA (mRNA), carries the genetic information needed to make proteins in a cell. It carries the information from the DNA in the nucleus of the cell to the cytoplasm, where proteins are made.

Detailed explanation-3: -The type of RNA that contains the information for making a protein is called messenger RNA (mRNA) because it carries the information, or message, from the DNA out of the nucleus into the cytoplasm.

Detailed explanation-4: -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-5: -First, enzymes read the information in a DNA molecule and transcribe it into an intermediary molecule called messenger ribonucleic acid, or mRNA. Next, the information contained in the mRNA molecule is translated into the “language” of amino acids, which are the building blocks of proteins.

There is 1 question to complete.