Archaea

question 18

Multiple Choice

Archaea

• A) have plasma membranes but lack cell walls.
• B) have plasma membranes, and most have cell walls.
• C) lack plasma membranes, but most have cell walls.
• D) have neither plasma membranes nor cell walls.
• E) have double plasma membranes and no cell walls.

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Definitions:

Levator Labii Superioris

The Levator Labii Superioris is a facial muscle that elevates the upper lip, aiding in expressions of disgust or snarling.

Platysma

A broad, thin muscle located in the chest and neck that is involved in facial expression and movement of the jaw.

Quadriceps Femoris

A large muscle group that covers the front and sides of the thigh, responsible for extension of the knee.

Third-class Lever

A type of lever where the effort is applied between the fulcrum and the load, used in scenarios where speed and range of movement are more important than force amplification.