AP BIOLOGY

Detailed explanation-1: -The only thing that the virus does not exhibit from the following choices is metabolism. Viruses are considered as non-living particles which do not have metabolism because metabolism is a basic feature of a living organism. Therefore, viruses are not capable to perform metabolism.

Detailed explanation-2: -Viruses themselves are metabolically inert and must rely on metabolic events in the cell to generate its component parts and to replicate new viral copies. Oftentimes, the cell at the time of infection is in a quiescent state, but the infection acts to change the cell’s metabolic activity.

Detailed explanation-3: -Next, all living things have metabolism. Viruses are too small and simple to collect or use their own energy – they just steal it from the cells they infect. Viruses only need energy when they make copies of themselves, and they don’t need any energy at all when they are outside of a cell.

Detailed explanation-4: -Viruses are composed of a nucleic acid, RNA or DNA-never both.-All viruses have a protein coat (capside) or shell that surrounds and protects the nucleic acid core.-Some viruses have a lipid envelope or membrane surrounding a nucleocapsid core. The source of the envelope is from the membranes of the host cell.