Biology qusetion??

Question

Why is RNA important to the cell?How dose an mRNA molecule carry information from DNA?

Answer 1

The forms of RNA (mRNA, tRNA and rRNA) all are involved in formation of protein by the cell. The instruction for the type of protein is carried on DNA. A section of DNA unwinds and RNA is formed from it. RNA is single stranded and has a backbone similar to that of DNA (Sugar-phosphate). RNA also has organic bases (nitrogenous bases) on it much like DNA except the thymine found on DNA is replaced with uracil on RNA. mRNA carries the message in 3 letter 'words' called codons and the message is 'read off' by RIBOSOMES. These codons on mRNA must match up with 'anticodons' on tRNA. The tRNA also has an amino acid attached to it. Each one of the amino acids have at least one tRNA devoted to its transport. The message on mRNA codes for a specific amino acid. Once tRNA brings the required amino acid down to the ribosome, rRNA (ribosomal) instructs or aids in the formation of the peptide bond that holds the protein together.
In short, mRNA moves through the ribosome calling for each of the amino acids in the protein, tRNA brings that amino acid and it is linked by rRNA to make the peptide chain.

Proteins are important because they control almost everything your cell does. Many are enzymes that control reactions, some are structural proteins and some are both. The channels that allow nutrients and minerals into your cells are also protein.

HOPE THIS HELPS :>}

Answer 2

RNA, also known as ribonucleic acid, is a polynucleotide which is structurally similar to DNA except that is its sugar is ribose, it contains uracil instead of thymine, and is usually single-stranded. RNA can be found in the nucleus and cytoplasm.

RNA is important in proper cell function. It is responsible for a process called protein synthesis. mRNA carries the complement of a DNA sequence and transports it from the nucleus to the ribosomes where the protein synthesis (aka translation) occurs. mRNA is made from ribonucleotides that are complementary to the "sense" strand of the DNA. For example, the DNA code for the protein valine is AAC, then the mRNA complement is UUG.

To answer your second question:
The process of transcription is whereby information coded in the base sequence of DNA is transcribed into a strand of mRNA which leaves the nucleus through nuclear pores. Once the mRNA enters the cytoplasm, it goes to the ribosomes to "deliver the message" to start making proteins.

Hope this helps : )

Answer 3

a. RNA serves as the template for translation of genes into proteins, transferring amino acids to the ribosome to form proteins, and also translating the transcript into proteins

b. Messenger RNA is RNA that carries information from DNA to the ribosome sites of protein synthesis in the cell. Once mRNA has been transcribed from DNA, it is exported from the nucleus into the cytoplasm (in eukaryotes mRNA is "processed" before being exported), where it is bound to ribosomes and translated into its corresponding protein form with the help of tRNA. After a certain amount of time the message degrades into its component nucleotides, usually with the assistance of RNA polymerases.

Answer 4

ill aid you recognize one million. the purpose of mitosis is to offer yet another cellular in an organism. it relatively is an ongoing technique untill death (of path no longer which contain disabilities). i'm hoping this helped :D