We Will Probably Never Know for Sure Whether Life Started

question 53

Multiple Choice

We will probably never know for sure whether life started on Mars until we

• A) develop better techniques to study Martian meteroites
• B) can study rocks on Mars itself or return a sample to Earth for analysis
• C) find a Martian meteorite containing amino acids
• D) find another meteorite exactly like ALH84001

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Definitions:

Joints

Structures in the body where two or more bones are connected, allowing for varied degrees of movement.

Abductor Pollicis Longus

A muscle in the forearm that facilitates the abduction and extension of the thumb.

Radius

One of the two bones in the forearm, located on the lateral side (thumb side) when in the anatomical position.

Brachioradialis

A muscle of the forearm that flexes the forearm at the elbow, particularly evident when the forearm is in a midpronation position.