Biology, 24.02.2020 04:57 reyrey216

9. Which best accounts for the variety of cells within our bodies?

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Answer from: anyone2562

"The variety of cells within our bodies" is best accounted for by their variety of functions.

Explanation:

Body has various types of cells. Under a microscope, although they will feel different, many cells have similar chemical and structural characteristics. There are around 200 different cell types in humans, and there are about 20 different types of frameworks or organelles within those cells.

There are 4 major tissue kinds: connective, muscle, nervous and epithelial. Such tissues are constructed of specialized cells and grouped according to their respective structure and function. Although if new cells are formed then old one die too i.e between 50-70 B cells die per day in an average adult.

Answer from: Quest

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

Answer from: Quest

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

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