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They aren't.
Or at least not all are. the bacteria, Thiomargarita namibiensis, is the largest in the world and can be seen with the naked eye. It does not cause disease though so its not technically a germ but it is a bacteria. It is about three quarters of a millimeter.
Germs vary a lot. the most common types are virus's and bacteria. Bacteria are single celled organisms. There is a limit for how big a cell can be based on how fast stuff can diffuse through it. Cells need to be able to have molecules move from one place to another quickly. Because they get most of their "food" from their surroundings, they need to be small so that it can get from their membrane to the center of the cell easily. They have other reasons but diffusion is the main one.
Viruses are not living. They are not made of cells and do not use energy. A simple description is that hey are just packages of DNA/RNA that float around until they find a host cell, they insert their DNA/RNA, the host cell's DNA reading system then reads the DNA which tells the cell to make the proteins that will form new viruses, the cell does so and then a short time later, you have new viruses. Viruses therefore don't need to be big. In fact, it harms them. They want to be as easy as possible for a host cell to build so that it can build a lot.
Prions are rare. The most commonly known one is mad cow disease. They are just single "zombie" proteins that find a specific protein (in mad cow disease's case a protein in your nerve cells), they bind to it and twist it out of its old shape and into the shape of another mad cow disease protein.They are small simply because they are made from single proteins which are small.
What else can I help you with?
What is good sentence with the word microscopic in it?
The microscopic fish had the severe disease of germs.
Do germs eat smaller germs?
Germs are microscopic organisms that can include bacteria, viruses, and fungi, and they do not consume other germs. They typically feed on organic matter such as proteins and sugars to survive and reproduce.
What is the adjective for microscope?
microscopic
How germs are formed?
"Germs" are made of bacteria and viruses.
Why do germs have different colors?
Germs do not actually have different colors. The colors you might see in images of germs are often added artificially for visualization and to distinguish between different types of germs. In reality, germs are typically colorless and can only be seen under a microscope.
Do takis have microscopic germs?
yes they have 35 percent
What is good sentence with the word microscopic in it?
The microscopic fish had the severe disease of germs.
Do germs eat smaller germs?
Germs are microscopic organisms that can include bacteria, viruses, and fungi, and they do not consume other germs. They typically feed on organic matter such as proteins and sugars to survive and reproduce.
Can you spread germs by breathing?
Yes you can. Some germs can survive in the microscopic water droplets that are propelled out of the nose or mouth when we breathe, therefore spreading the germs. How long the germs live is dependant on what the virus is, however.
How many germs live on your cell phone?
There are thousands of microscopic germs living on your cell phone. It spreads if other people touch it too. There are thousands of ways to get germs on your cell phone.
Do germs come from eggs?
Germs themselves do not come from eggs. Germs are microscopic pathogens such as bacteria, viruses, and fungi that can cause infections or diseases. Eggs are a food source rather than a source of germs.
What is a rabbit covered with?
Fur, and if not all that healthy, mites, insects, teeny tiny microscopic germs, etc.
Can germs be seen with a uv light?
No, germs cannot be seen with a UV light. UV light can be used to disinfect surfaces by killing germs, but it does not make germs visible to the human eye. Germs are microscopic organisms that are not visible without the use of a microscope.
What system protects your body from germs?
Defends the body after it has been invaded by a microscopic organism
Is germs a good science fair project?
It could be, but it would be tough. Germs are microscopic. You have to show cause/effect, or change in some way that is visible to the naked eye. It can be done with germs, but it is making your job a lot tougher. It could be a great project, but it would be a very challenging one.
Do you get diarreah rom eating a banana peel?
Yes, you can, It has many small germs and viruses on the microscopic pores. That's why you should always boil a banana peel before you eat it.
Does microorganisms mean the same as germs?
Yes, and so does "microbes", and microscopic organisms. Answer Usually the word germ carries a negative connotation (thus, usually the disease causing Pathogenic microorganisms are referred to as germs). remember, not all microorganisms are bad. In fact some are quite good. However, in some scientific circles, all microorganisms whether good or bad are germs.
