Cells, Cell Theory, and History of Cells Flashcard

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What is a prokaryote?

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A prokaryote is a single-celled organism that lacks a nucleus and membrane-bound organelles. Examples include bacteria.

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What is a eukaryote?

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A eukaryote is an organism whose cells contain a nucleus and membrane-bound organelles. Examples include plants, animals, and fungi.

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What is the cell theory?

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The cell theory states that: 1) All living organisms are composed of one or more cells, 2) The cell is the basic unit of life, and 3) All cells arise from preexisting cells.

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What is the difference between prokaryotic and eukaryotic cells?

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Prokaryotic cells are smaller, simpler, and lack a nucleus, while eukaryotic cells are larger, more complex, and have a nucleus.

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What organelle is found only in eukaryotic cells?

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Mitochondria are found only in eukaryotic cells and are responsible for energy production.

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Who was Anton van Leeuwenhoek?

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Anton van Leeuwenhoek was a scientist known for being the first to observe bacteria and protozoa using a microscope.

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What is the function of ribosomes?

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Ribosomes are responsible for protein synthesis in both prokaryotic and eukaryotic cells.

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What is the role of the cell membrane?

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The cell membrane controls the movement of substances in and out of the cell, providing protection and structural support.

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What is DNA?

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DNA (deoxyribonucleic acid) is the hereditary material in all living organisms, containing the instructions for development and function.

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What is the significance of the nucleus?

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The nucleus is the control center of eukaryotic cells, housing the cell's genetic material and coordinating activities such as growth and reproduction.