Question

Which of the following shows correctly ordered steps for protein synthesis in animal

cells?
Protein -> RNA ->DNA
DNA -> Protein ->RNA
RNA -> DNA ->Protein
DNA -> RNA ->Protein

Answer 1

The correctly ordered steps for protein synthesis in animal cells are DNA -> RNA -> Protein, encompassing transcription and translation processes.

Step-by-step explanation:

The correct order of steps for protein synthesis in animal cells is DNA -> RNA -> Protein. This sequence represents the central dogma of molecular biology, which describes the flow of genetic information within a cell. The process begins with transcription, where DNA is used to create an RNA template, taking place in the nucleus of the cell. Following transcription, the mRNA travels out of the nucleus and attaches to ribosomes in the cytoplasm, where translation occurs. During translation, transfer-RNA (tRNA) brings specific amino acids to the ribosome to be added to the growing polypeptide chain in the correct sequence as dictated by the mRNA. This eventually leads to the folding of the polypeptide into a functional protein.

Answer 2

Answer: DNA -> RNA ->Protein (choice 4)

RNA enters the cell nucleus to copy the DNA sequence, and that sequence of RNA is transported outside the nucleus to the ribosome. This is where amino acids are assembled to form complex protein chains.