RNA

ribonucleic acid: a nucleic acid that directs the synthesis of protein molecules in living cells. There are three main types of RNA. Messenger RNA carries the genetic code from the cell nucleus to the cytoplasm. Ribosomal RNA is found in ribosomes, small particles where proteins are assembled from amino acids. Transfer RNA carries specific amino acids for protein synthesis. Each of the 20 amino acids has a corresponding transfer RNA molecule to place the amino acid in the proper sequence in protein assembly. RNA is similar to DNA in structure except that it consists of a single strand of nucleotides (compared with the double strands of DNA), the base uracil (U) occurs instead of thymine (T), and the sugar unit is ribose, rather than deoxyribose.

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Psychology term of the day

May 8th 2024

cooperative learning

1. learning in small groups, to which each student in the group is expected to contribute using interpersonal skills and face-to-face interaction. Students also participate in regular assessment of the group process.

2. a formal method of acquiring information that combines knowledge obtained in a classroom setting with that obtained in a work or applied setting. Typically, the formal classroom aspect of instruction is focused specifically on the actual work experience. See also cooperative training.