The Membrane of a Contractile Cardiac Muscle Cell Contains

question 135

Multiple Choice

The membrane of a contractile cardiac muscle cell contains

• A) no calcium pumps.
• B) calcium pumps that move calcium out of the cell.
• C) calcium pumps that move calcium into the cell.
• D) calcium pumps that open and allow calcium to diffuse down its concentration gradient to reach equilibrium.

---

Definitions:

C Stretch

Refers to the carbon-hydrogen bond stretching vibration observed in infrared spectroscopy, indicative of specific organic functional groups.

Peaks

In the context of spectroscopy, refers to the points on a graph that represent the maximum absorption or emission of energy by molecules at specific wavelengths or frequencies.

Proton Spin Decoupled

A technique used in NMR spectroscopy where the coupling between proton spins is removed, simplifying the spectrum and making it easier to interpret.

Peaks

In analytical chemistry, refers to the points in a graph, spectrum, or chromatogram that represent a maximum concentration or abundance of a compound or component.