Rheumatoid arthritis is an autoimmune disease which causes the joints in the body to be constantly inflammed. this disease results when body tissues are
a.
attacked by one's own immune system.
b.
infected by a virus.
c.
infected by bacteria.
d.
attacked by oxygenated red blood cells.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.

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