Working out the order in which the individual components in a signaling pathway act is an essential step in defining the pathway. Imagine that two protein kinases, PK-B and PK-X, act sequentially in an intracellular signaling pathway: - When either kinase is completely inactivated, cells do not respond to the normal extracellular signal. - Cells containing a mutant form of PK-B that is permanently active respond even in the absence of an extracellular signal. - Doubly mutant cells that contain inactivated PK-X and permanently active PK-B respond in the absence of a signal. A. In the normal signaling pathway, does PK-B activate PK-X or does PK-X activate PK-B? Explain your reasoning.
Answers: 1
Biology, 22.06.2019 15:30
Which statements best describe monsoons? check all that apply. they force cool, moist air from oceans to rise. they are winds that blow in the opposite direction of a normal wind. they bring rain in the summer and drought in the winter they increase rainfall in south asia, africa, and australia. they influence precipitation as wind moves near a mountain.
Answers: 1
Biology, 22.06.2019 22:00
Which step is the same in both forms of fermentation, as well as in cellular respiration?
Answers: 3
Biology, 22.06.2019 22:00
The best instrument to use to separate the liquid portion from the solid portions in whole blood is a(an) a. compound light microscope. c. test tube. b. centrifuge. d. electron microscope.
Answers: 1
Biology, 22.06.2019 22:00
Which statement is true for all sexually reproducing plants and animals? the process of mitosis produces gametes.the process of mitosis always produces diploid cells.the process of meiosis produces gametes.the process of meiosis produces haploid cells.the process of meiosis produces diploid cells.
Answers: 2
Working out the order in which the individual components in a signaling pathway act is an essential...
Health, 07.01.2021 23:30
Mathematics, 07.01.2021 23:30
Biology, 07.01.2021 23:30
English, 07.01.2021 23:30
Chemistry, 07.01.2021 23:30
Mathematics, 07.01.2021 23:30
Mathematics, 07.01.2021 23:30
Mathematics, 07.01.2021 23:30
Mathematics, 07.01.2021 23:30
English, 07.01.2021 23:30