Cell Theory

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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 made up of cells, 2) The cell is the basic unit of life, and 3) All cells come from pre-existing cells.

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What are cells?

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Cells are the basic building blocks of all living organisms. They are the smallest units of life that can carry out all life processes.

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Who was Robert Hooke?

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Robert Hooke was a scientist who first observed cells in 1665 by looking at a slice of cork under a microscope.

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What is a unicellular organism?

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A unicellular organism is an organism that consists of only one cell, such as bacteria and some protists.

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What is a multicellular organism?

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A multicellular organism is made up of many cells that work together, such as humans, animals, and plants.

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What is the function of a cell membrane?

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The cell membrane is a protective barrier that surrounds the cell, controlling what enters and exits the cell.

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What is cytoplasm?

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Cytoplasm is the jelly-like substance inside a cell that contains organelles and is where many cellular processes occur.

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What are organelles?

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Organelles are specialized structures within a cell that perform specific functions, such as mitochondria for energy production.

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What is the nucleus?

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The nucleus is the control center of the cell that contains genetic material (DNA) and regulates cell activities.

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What is the role of chloroplasts?

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Chloroplasts are organelles found in plant cells that capture sunlight and convert it into energy through photosynthesis.