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Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
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Biology, 22.06.2019 15:00
Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective
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Biology, 22.06.2019 15:40
Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine
Answers: 2
Biology, 22.06.2019 23:30
Enzymes are both ph and temperature specific. seen here are the reaction rates of three common digestive enzymes. based on the data, which enzyme's optimum activity occurs in a basic environment while another's is very acidic?
Answers: 1
Under most conditions, only one small part of the enzyme, called the , complexes with the substrate...
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