In the eukaryotic growth factor signal transduction pathway, _____________ is responsible for initiating a cascade of phosphorylation of transcription factors that begin the S phase
a. EGF
b. RTK
c. RAS
d. CNK
e. RAF
Ans: e
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Match the second messenger on the left with the properties on the right.
A) activates protein kinase C B) opens sensory-associated ion channels C) can bind calmodulin D) glucose mobilization E) opens calcium channels 1) cAMP 2) IP3 3) DAG 4) calcium 5) cGMP
The plant hormone ____ is primarily responsible for the bending of a plant shoot toward light
a. auxin b. ethylene c. systemin d. salicylic acid e. brassinosteroid
If the volume of a cell increases, its surface area will
a. decrease. b. remain the same. c. increase proportionately. d. increase to a greater degree. e. increase to a lesser degree.
In a 32-cell stage tunicate embryo, if the vegetal marginal cells lack a functional FGF receptor, which structure(s) will fail to develop? (Select all that apply)A) notochordB) mesenchymeC) muscleD) nerve cord
What will be an ideal response?