The Sinoatrial Node Controls the Heart Beat

question 32

True/False

The sinoatrial node controls the heart beat.

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Definitions:

Endoplasmic Reticulum

An organelle in eukaryotic cells comprising a network of membranous tubules and sacs, involved in protein and lipid synthesis.

Lactose

A type of sugar found in milk and dairy products, composed of glucose and galactose units.

E. Coli

Escherichia coli, a rod-shaped bacterium that is commonly found in the intestines of warm-blooded organisms and can be either harmless or pathogenic.

Lac Repressor

A protein that binds to the lac operon and inhibits the metabolism of lactose in bacteria.