Signal Transduction Occurs When a Chemical Message at the Cell

question 9

Multiple Choice

Signal transduction occurs when a chemical message at the cell surface elicits a response inside the cell.Which one of the following events is not associated with signal transduction?

• A)protein phosphorylation
• B)cell-surface receptor binding
• C)internal receptor binding
• D)second messenger activation

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Definitions:

Atomic Weight

The average mass of atoms of an element, calculated using the relative abundance of isotopes in a naturally-occurring element.

Structural Formula

A type of chemical formula that shows the spatial arrangement of the atoms in a molecule. Compare with the simplest formula and molecular formula.

Molecular Formula

The type of chemical formula that gives the actual numbers of each type of atom in a molecule. Compare with simplest formula and structural formula.

Lewis Structure

A graphical representation of the valence electrons in molecules, showing how the atoms are bonded together and the lone pairs of electrons.