Which of the following are among the most common second messengers?
kinase and phosphatase
g proteins and gtp
kinase and phosphate groups
calcium ion and camp
gtp and gdp

The correct answer would be calcium ion and cAMP.

Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.

The secondary messengers can be classified into three major class:

Hence, from the given options, calcium ion and cAMP would make the correct choice.

g1

choices:

a. g2. b. g1. c. m

cell division has two checkpoints namely, g1

checkpoint and spindle assembly checkpoint. the checkpoint which determines if

division has properly occurred is the g1 checkpoint. at this point, is a damage

in the dna is detected or  the has not reach the optimum size, the cell is

stopped in g1 and is not allowed to proceed to further process.

source:

option a and d is the correct answer

i hope this u

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