Biology, 05.05.2020 18:23, mairimespinal

is a pathway that would lead to the activation of cytotoxic t cells?

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Biology, 21.06.2019 18:00, jstephanie644

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

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Biology, 22.06.2019 09:30, ssuereichard

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

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Biology, 22.06.2019 14:30, ItzMeEmilyyyy

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.

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Biology, 23.06.2019 00:00, evsdcp44b3w

Consider the table. types of bacteria form shape associated disease coccus x strep throat bacillus rod shaped y spirillum spiral cholera which best describes x and y?