Mercury and the Moon Are Probably the Least-Habitable Bodies in the Solar

question 33

Multiple Choice

Mercury and the Moon are probably the least-habitable bodies in the solar system because they

• A) are unlikely to have liquids anywhere
• B) have never had carbon compounds on their surfaces
• C) do not have atmospheres containing oxygen
• D) do not receive any sunlight

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Definitions:

Holocrine Gland

Gland whose secretion is formed by the disintegration of entire cells (e.g., sebaceous gland).

Sebaceous Gland

A type of skin gland that produces sebum, an oily substance that helps to keep the skin and hair moisturized.

Sweat Gland

Small tubular structures of the skin that produce sweat, a fluid composed of water, minerals, and waste products.

Adhesion Belt

A cell structure composed of cadherin proteins that encircles a cell, promoting cell-cell adhesion and tissue integrity.