Identfy the incorrect statement about active transport. a)It doesn't require the use of a cell's energy b)None of the choices. c
)It moves substances across the cell membrane against their concentration gradients d)Sometimes active transport involves the use of carrier proteins to transport substances in much the same way as passive transport.
Active transport is a process by which substances move through the cell membrane using energy against the concentration gradient. Sometimes there is involvement of carrier proteins.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
An aminoacyl-tRNA synthetase (aaRS or ARS), also called tRNA-ligase, is an enzyme that attaches the appropriate amino acid onto its corresponding tRNA. It does so by catalyzing the transesterification of a specific cognate amino acid or its precursor to one of all its compatible cognate tRNAs to form an aminoacyl-tRNA.
