NEET BIOLOGY

Detailed explanation-1: -Virus-a small nonliving particle that invades and then multiplies inside a living cell. Biologists consider viruses to be nonliving because viruses are not cells. Viruses do not use energy to grow or respond to their surroundings. Viruses can multiply. However they do it differently than other organisms.

Detailed explanation-2: -Viruses are tiny infectious agents that invade host cells and cause disease.

Detailed explanation-3: -Viruses reproduce inside a living organism. They can develop only inside the cells of the host organisms (which may be an animal, plant or bacterium).

Detailed explanation-4: -Virus: ↑ A type of microbe that can infects cells. Human viruses infect human cells, plant viruses infect plant cells, etc. Bacteriophage: ↑ A virus that infects bacteria, also called a phage. DNA: ↑ The molecule that carries all the information in the form of genes needed to produce proteins.

Detailed explanation-5: -virus: Tiny, nonliving particle that contains DNA (or RNA) surrounded by a protein coat; lacks other characteristics of living cells.