Outside of cell Cytokine Phosphorylation Inside of cel Dimeri?ation DNA X Nucleus Transcription mRNA

the figure shows a signal transduction pathway involving two proteins found in the cytoplasm?JAK and STAT. based on this figure, what are the roles of JAK and STAT in this pathway?

a) JAK is a protein kinase and STAT is a G protein

b) JAK is a G protein and STAT is a transcription factor

c) JAK is a G protein and STAT is adenylyl cyclase

d) JAK is a transcription factor and STAT is a GTPase

e) JAK is a protein kinase and STAT is a transcription factor

(4) Is the Markov chain whose transition matrix whose transition matrix is 0 0.4 0.67 regular? (Yes or No) (5) Is the Markov chain whose transition matrix whose transition matrix is 0.2 0 0.8 0.6 0.4 0 regular? (Yes or No)6.4.5 A chemical solution contains A molecules of type A and an equal number of molecules of type B. A reversible reaction occurs between type A and B Continuous Time Markov Chains 315 molecules in which they bond to form a new compound AB. Suppose that in any small time interval of length h, any particular unbonded A molecule will react with any particular unbonded B molecule with probability ah + o(h), where or is a reaction rate of formation. Suppose also that in any small time interval of length h, any particular AB molecule disassociates into its A and B constituents with probability Bh + o(h), where B is a reaction rate of dissolution. Let X(t) denote the number of AB molecules at time r. Model X(t) as a birth and death process by specifying the parameters.3. An iniportent distribution in the multivariate setting is the multivariate normal distribution. Let K be a random vector in El\". That is with X1, X2, . . . , X1, random variables. If X has a multivariate normal distribution, then its joint pdf is given by 1 1 _ ax):(Wwetmme 2e \")1": lacm} with parameters a, a. vector in R\