Characteristics of Life

What is the basic unit that makes up all living organisms?

• Tissues

• Atoms

• Cells

• Molecules

Why is homeostasis important for living organisms?

• It helps organisms grow faster.

• It allows organisms to maintain a stable internal environment.

• It enables organisms to reproduce.

• It helps organisms to evolve.

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How do unicellular organisms like bacteria reproduce?

• By budding

• By forming seeds

• By splitting into two

• By laying eggs

What is an example of a plant responding to a stimulus?

• A plant bending towards light

• A tree losing leaves in winter

• A flower changing color

• A cactus growing taller

What process allows gene frequencies in a population to change over time?

• Metabolism

• Natural selection

• Homeostasis

• Photosynthesis