The Planet with the Most Eccentric Orbit Is

question 72

Multiple Choice

The planet with the most eccentric orbit is:

• A)Mercury.
• B)Earth.
• C)Mars.
• D)Neptune.
• E)All planets orbit in circles, so have the same eccentricity.

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Definitions:

Smooth Endoplasmic Reticulum

A cellular organelle involved in lipid synthesis, detoxification, and calcium ion storage, lacking attached ribosomes.

Secretory Vesicle

Membrane-bound sacs within cells that store and transport substances which are to be secreted or released.

Microtubule

Hollow tube composed of tubulin, measuring approximately 25 nm in diameter and usually several micro meters long. Helps provide support to the cytoplasm of the cell and is a component of certain cell organelles, such as centrioles, spindle fibers, cilia, and flagella.

Lysosomes

Organelles in cells that contain enzymes used to break down and recycle cellular debris and foreign substances.