The Particle That Orbits the Central Core Inside an Atom

question 19

Multiple Choice

The particle that orbits the central core inside an atom is

• A)the electron.
• B)the proton.
• C)the neutron.
• D)the nucleus.
• E)none of the above.

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Definitions:

Phloem

The vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.

Xylem

A type of vascular tissue in plants that transports water and dissolved minerals from the roots to the rest of the plant.

Alpha-Galacturonic Acid

A component of pectin, a polysaccharide found in the cell walls of plants, involved in maintaining cell structure and rigidity.

Glucagon

A hormone produced by the pancreas that promotes the increase of blood glucose levels by stimulating glycogen breakdown in the liver.