Biology, 14.09.2019 16:10, alejandra340
White blood cells called b cells produce proteins that can be used for the treatment of certain illnesses. however, these b cells do not live for very long on their own. to keep the b cells growing for a long time in laboratories, scientists fuse the b cells with cancer cells (fused b-cancer cells) that do grow for a very long time. the particular cancer cells used for the fusion are treated with chemicals that make them unable to produce the nitrogenous bases adenine and guanine, but the b cells with which they are fused do produce these nitrogenous bases. the scientists grow the large fused b-cancer cells in a growth medium that contains necessary nutrients for the cells and includes a source of carbon.
(a) describe the role of carbon in biological systems.
Answers: 1
Biology, 22.06.2019 12:00, ALEXMASTERS64
Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?
Answers: 2
Biology, 22.06.2019 12:30, PayeA264
Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls
Answers: 3
White blood cells called b cells produce proteins that can be used for the treatment of certain illn...
Business, 25.02.2020 19:40