Cell theory and characteristics of life

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What is cell theory?

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Cell theory is a fundamental concept in biology that states: 1) All living things are composed of cells. 2) Cells are the basic unit of life. 3) All cells come from pre-existing cells.

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What are the characteristics of life?

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The characteristics of life include: 1) All living things are made of cells. 2) All living things use energy. 3) All living things grow and develop. 4) All living things reproduce. 5) All living things respond to stimuli. 6) All living things maintain homeostasis.

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What is the smallest unit of life?

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The smallest unit of life is the cell.

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What do all living things have in common?

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All living things are made up of cells.

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What does it mean for living things to maintain homeostasis?

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Homeostasis refers to the ability of living organisms to maintain a stable internal environment despite changes in external conditions.

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How do living things reproduce?

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Living things can reproduce either sexually or asexually, leading to the creation of new individuals.

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What is the role of energy in living organisms?

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All living things use energy to grow, develop, and carry out life processes.

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What is growth and development in living organisms?

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Growth refers to an increase in size, while development involves changes in the organism's structure and function over time.

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What is the significance of responding to stimuli?

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Responding to stimuli is crucial for survival, as it allows organisms to react to changes in their environment.

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What are unicellular organisms?

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Unicellular organisms are living things that consist of a single cell, such as bacteria.

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