Biology, 06.10.2019 01:30 josetheghost6313
Consider an experiment where your goal is to isolate bruton’s tyrosine kinase (btk) enzyme from a whole‑cell lysate. you have an affinity chromatography column with a tyrosine kinase inhibitor molecule covalently attached to the beads. the tyrosine kinase inhibitor binds and inhibits btk. as a result of the experiment, you are able to elute btk from the column, but in a mixture of other tyrosine kinases.
why are tyrosine kinases other than btk present in the eluate?
(a) the kinase inhibitor has low binding affinity.
(b) btk is rapidly degraded during cell lysis.
(c) the kinase inhibitor has low specificity.
(d) btk is inactive in the cell.
Answers: 2
Biology, 22.06.2019 14:30
The table below shows data for a population of fish in a pond. fish body color # of fins scales? tail shape a silver 4 yes fan b pink 4 yes flat c black 4 yes fan d orange 4 yes flat e orange 4 yes fan f silver 4 yes flat which of the above characteristics would be most in developing a classification system for the fish? a. body color and tail shape b. presence of scales and tail shape c. body color and number of fins d. number of fins and presence of scales
Answers: 2
Biology, 22.06.2019 17:30
Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)
Answers: 3
Consider an experiment where your goal is to isolate bruton’s tyrosine kinase (btk) enzyme from a wh...
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