Small Bodies Like Asteroids and Comets Are Unlikely to Harbor

question 50

Multiple Choice

Small bodies like asteroids and comets are unlikely to harbor life because they

• A) are constantly colliding with each other, sterilizing any life that may be present
• B) have not had liquid water inside them for extended periods now or in the past
• C) do not contain any organic molecules
• D) are so far from the Sun that any water would be permanently frozen

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Definitions:

Nourished

Being provided with the food or other substances necessary for growth, health, and good condition.

Lamellar Bodies

Membrane-bound organelles found in certain cells, such as type II pneumocytes, containing lipids and proteins important for pulmonary surfactant production.

Stratum Granulosum

Layer of cells in the epidermis filled with granules of keratohyalin.

Keratinocytes

The primary type of cell found in the epidermis, responsible for producing keratin, a protein that gives skin its strength and resilience.