Which of the Following Would Probably Be the Best Prototype

question 206

Multiple Choice

Which of the following would probably be the best prototype of "bird"?

• A) robin
• B) ostrich
• C) penguin
• D) duck-billed platypus

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Definitions:

Muscle Fiber

An individual muscle cell, known for its elongated shape, that contracts to produce force and movement.

Sarcoplasm

A type of cytoplasm found in muscle cells, rich in stored lipids, glycogen, and the proteins necessary for muscle contraction.

Intercalated Discs

Specialized structures located at the cell boundaries in cardiac muscle fibers that facilitate the coordinated contraction of the heart muscle.

Cardiac Muscle

Involuntary, striated type of muscle found in the vertebrate heart. Compare with smooth muscle and skeletal muscle.