The Same Gas Makes Up Most of the Atmosphere of Mars

question 42

Multiple Choice

The same gas makes up most of the atmosphere of Mars and Venus. This gas is:

• A) water vapor
• B) nitrogen
• C) ozone
• D) ammonia gas
• E) carbon dioxide

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Definitions:

Noncyclic Pathways

Metabolic pathways that do not recycle their starting molecule, leading to the production of end products.

Hydrogen Ions

Positively charged ions (H+) that are formed when a hydrogen atom loses its electron, often used to quantify the acidity or alkalinity (pH) of solutions.

Thylakoid Compartment

A structure within chloroplasts of plant cells that contains the machinery for photosynthesis.

Chlorophyll A

A key photosynthetic pigment found in plants, algae, and cyanobacteria, responsible for the green color and vital for capturing light energy to produce food.