The T cell is a lymphocyte or type of white blood cell. They play a role in the immunity of the body. There are different varieties of T cells and they are differentiated by the receptors that are on the surface of the cells. Some cells are natural killers and some are B cells.
The statement above is TRUE.
Negative transcriptional regulation involves the binding of the repressor protein to the operator in order to prevent a gene from been expressed. Transcription in eukaryotic cells is controlled by proteins which bind to specific regulatory sequences and modulate the activity of the enzyme concerned. Regulation of transcription can be negative or positive.
Answer:
The production of peptides linking aminoacids through peptidic bonds
Explanation:
Chemically, peptides are synthesized by condensation where the carboxyl group of one amino acid is linked to the amino group of the other amino acid. The most common way to make a chemical peptide synthesis is linking first the carboxyl end of one amino acid to the amino group, not in the other direction. The opposite reaction, starting from the amino end and linking to the carboxyl end, is made in biosynthesis made by living organisms.
The correct answer is tidal energy needed for life.<span> It is a well-known fact that the Moon affects the waters on Earth in such a way that it creates disruptions in the oceanic and sea levels and thus larger or smaller tides are created. These tides are necessary for hydropower, among other things, so it is only natural that the Moon should have such an important impact on life on Earth.</span>