Tissue culture is the growth in an artificial medium of cells derived from living tissue.
4.Help doctors and nurses and be an advocate for patients when doctor is not available
Answer: it burns fewer calories than muscle & tissue; and it stores calories much more readily.
The answer among the choices is letter A. Sterols is a lipid that doesn't contain a glycerol backbone because it is mostly unsaturated. It can be commonly found on fungi, plants, and animals as an important organic molecule. I hope my answer helps you.
