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What Is the Smallest Cell That Exists?

[Summary]Mycoplasma Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane.[1] Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis.

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Mycoplasma

Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane.[1] Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis. They can be parasitic or saprotrophic. Several species are pathogenic in humans, including M. pneumoniae, which is an important cause of atypical pneumonia and other respiratory disorders, and M. genitalium, which is believed to be involved in pelvic inflammatory diseases. Mycoplasma species are the smallest bacterial cells yet discovered,[2] can survive without oxygen, and come in various shapes. For example, M. genitalium is flask-shaped (about 300 x 600 nm), while M. pneumoniae is more elongated (about 100 x 1000 nm). Hundreds of mycoplasma species infect animals.[3]

How Does Sickle Cell Cause Disease?

last revised April 11, 2002

How Does Sickle Cell Cause Disease?

The Mutation in Hemoglobin

Sickle cell disease is a blood condition seen most commonly in people of African ancestry and in the tribal peoples of India. Clinically significant sickle cell syndromes also occur in people of Mediterranean and Middle Eastern background. Here, the most common problem is a combination sickle cell and beta thalassemia genes. The sickle cell mutation reflects a single change in the amino acid building blocks of the oxygen-transport protein, hemoglobin. This protein, which is the component that gives red cells their color, has two subunits. The alpha subunit is normal in people with sickle cell disease. The beta subunit has the amino acid valine at position 6 instead of the glutamic acid that is normally present. The alteration is the basis of all the problems that occur in people with sickle cell disease. The schematic diagram shows the first eight of the 146 amino acids in the beta globin subunit of the hemoglobin molecule. The amino acids of the hemoglobin protein are represented as a series of linked, colored boxes. The lavender box represents the normal glutamic acid at position 6. The dark green box represents the valine in sickle cell hemoglobin. The other amino acids in sickle and normal hemoglobin are identical.

Smallest organisms

The smallest organisms found on Earth can be determined according to various aspects of organism size; including volume, mass, height, length, or genome size.

Given the incomplete nature of scientific knowledge, it is possible that the smallest organism is undiscovered. Furthermore, there is some debate over the definition of life, and what entities qualify as organisms; consequently the smallest known organism (microorganism) is debatable.

"If you can read this sentence, I can prove God exists"

sometimes I write things on this forum when I can’t sleep and barely remember doing it . I apologize for the ramble.

Your defense of {scientists} I find rude as you always consider only those who agree the Bible is not the word of God and must be reinterpreted to “fit” “modern science” to be such. As far as Piltdown Man Harvard Press still used it as evidence in 1966.
All I can say is when I hear that cliche argument, all of your arguments seem to be cliches, that “scientists” protected us by exposing Piltdown I hear kowtow. For 43 years a fraud that would not fool a smart 10 year old was accepted and led many to deny Christ. If you are a Christian then why is that not your great concern and why does it not cause you to question evolution in general? It took 30 years before anyone bothered to check out the “Dating Disaster” yet I am told to be proud “scientists” protected me from error? Please note the creationists you consider idiots were never fooled by that or the even worse error of Uniformitarianism that took 150 years for the secularists to concede and yet many still refuse to..

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