The genetic code is the relationship between a nucleotide and an amino acid. Each amino acid is coded for by a set of three nucleotides in DNA. Each set of nucleotides is called a codon or triplet. The set of all possible three- nucleotide combinations is called the genetic code or triplet code.
The sequence of nucleotides in DNA determines the sequence of amino acids found in all proteins.
Codons are read from mRNA during protein synthesis and consequently, they are given in RNA bases rather than in the original DNA sequence. The process of reading these codons is called translation.
Answer:
A gland that secretes hormones
Explanation:
Exocrine glands are the tissue which can secrete organic compounds in the human body and secrete them through the process of exocytosis. The exocrine glands secrete the secretion through the ducts into the body cavity. They do not secrete the blood into the bloodstream but in the body cavities.
In the given question, the characteristic which is not performed by the exocrine gland is the secretion of hormones as they are produced by the endocrine glands which strictly pour them into the bloodstream.
Thus, the selected option is the correct answer.
1. The RNA that has an amino acid attached to it, and that binds to the codon on the mRNA, is called a tRNA.
tRNA are molecules involved in protein synthesis (translation) and those molecules connect codons from mRNA with the amino acids they encode.tRNA has anticodone that binds to mRNA codone.
2. The process, performed by the ribosome, of reading mRNA and synthesizing a protein is called translation.
Translation is a process of gene expression in which proteins are synthesized (translated from the codons on mRNA).
3. Initiation of translation always happens at the start codon of the mRNA.
Translation process can be divided into three stages: initiation (starting off), elongation (adding amino acids to peptide chain that is going to become protein) and termination (finishing up).
4. Amino acids are attached to tRNA by enzymes called aminoacyl-tRNA synthetase.
These enzymes are part of the elongation stage of translation and they catalyze the adding of amino acids.
5. Termination of translation happens when the ribosome hits a stop codon on the mRNA.
Termination is the stage in which the finished polypeptide chain (future protein) is released from the ribosome.
To raise an arm upward the muscle on one side of it contracts. It relaxes the muscle on the opposite side of the arm.