Cilia and Flagella

question 137

Multiple Choice

Cilia and flagella:

• A)are specialized cells that move by rotary motion.
• B)are specialized organelles that move by rotary motion.
• C)are specialized organelles that propel some algae, plant, and animal cells.
• D)contain microfilaments arranged in nine pairs around the periphery and two microfilaments in the center.
• E)contain microtubules arranged in nine pairs around the periphery and two microfilaments in the center.

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Definitions:

Flake Tools

Prehistoric stone tools created by chipping or flaking off pieces from a larger stone, used by early humans for cutting and scraping.

Homo Erectus

An extinct species of early human that lived throughout Africa, Asia, and Europe between approximately 1.9 million and 143,000 years ago, known for its upright posture.

Toolmakers

Beings (often humans) who create, modify, or use tools, enhancing their ability to interact with and manipulate their environment.