The strong force has a range of about the width of an atomic nucleus, and is responsible for binding protons and neutrons together. Like electromagnetic force, the nuclear forces are governed by gauge bosons.
Answer: A. True
Explanation: Cell receptors are proteins that receive signals and trigger a signal cascade for the cell can respond. There's many types of receptors, depend of their location and their enzymatic activity, and each type can recognize certain signals. For example, tyrosine-kinase receptors can recognize growth factors, JAK associated receptors can recognize cytokines, etc. That specificity is given by the structure of the receptor and the structure of the signal.
The second group is the:
Option D. control group
