Answer:
Spikes are found on some viruses. They are very consistent in structure and can be used for identification.
Explanation:
Viruses have varied structures. A virus particle is composed of DNA or RNA that is inside a protective layer of protein called a capsid. The shape of the capsid can vary from one type of virus to another. The capsid is composed of proteins that are encoded by viral genes within the virus genome.
Gene, Chromosome, DNA, Nucleus, Cell, Organism
Answer:
The cells of the body's surface form the outer layer of skin. Inside the body, epithelial cells form the lining of the mouth and alimentary canal and protect these organs. Epithelial tissues help in absorption of water and nutrients
The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges. The brain is also cushioned and protected by cerebrospinal fluid. This watery fluid is produced by special cells in the four hollow spaces in the brain, called ventricles.
Explanation:
Answer: Biodiversity is used to refer to all species that lives in there
Explanation:
