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Viruses are even smaller than bacteria. They aren’t even a full cell. They are simply genetic material (DNA or RNA) packaged inside of a protein coating. … Viruses cause minor sicknesses like colds, common illnesses like the flu, and very serious diseases like smallpox or HIV/AIDS.
The four major types of germs are bacteria, viruses, fungi, and protozoa. They can invade plants, animals, and people, and sometimes they can make us sick. Bacteria (say: BAK–teer–ee–uh) are tiny, one–celled creatures that get nutrients from their environments in order to live.
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Answer and Explanation: Viruses are not considered living cells and therefore are neither single–celled nor multi-celled. They are simply considered to be protein shells…
Infections can be spread through these 5 different ways:
- Physical contact. Infections, especially skin contagions, are spread by direct physical contact. …
- Droplet spreading. Colds, strep throat etc. …
- Contaminated items. …
- Bowel movements. …
- Exposure to blood.
