Problem:
Question 1: Which type of intermediate filament is found in all animal cells
a. Keratins
b. Nuclear lamins
d. neural filaments
Question 2: Which one of the following is not a small intracellular signaling molecule
a. cAMP
b. phospholipase C
c. inositol triphosephate (IP3)
d. diacylglycerol (DAG)
Please select correct answer and also provide explaination.