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22 Cards in this Set
- Front
- Back
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What are cells?
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Cells are the basic unit of structure and function in living things?
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How are structures of living things determined?
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By the variety of ways in which cells are put together.
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What does the Cell Theory state?
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-All living things are composed of cells
Cells are the basic units of structure and function in living things -All cells are produced from other cells |
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What is a cell wall?
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A rigid layer of nonliving material that surrounds the cells of plants and other organisms. It helps protect and support the cell.
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What is a cell membrane?
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The next barrier after the cell wall that controls what substances come into and out of a cell.
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What is a nucleus?
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The "brain" of the cell or the cell's control center, directing all of the cell's activities.
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What is a nuclear envelope?
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A membrane that surrounds the nucleus and protects nucleus from materials like an envelope.
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What is a chromatin?
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Strands that contain genetic material or the instructions in directing the cell's functions.
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What are cytoplasms?
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The region between the cell membrane and the nucleus.
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What are mitochondria?
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Rod-shaped structures organelles. Known as the "powerhouses" of the cell because they convert energy in the food molecules to energy the cell can use to carry out its functions.
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What endoplasmic reticulum?
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Passageways that carry proteins and other materials from one part of the cell to another.
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What are ribosomes?
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Small, grainlike bodies that function as factories to produce proteins.
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What are golgi bodies?
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The cell's "main room," that recieve proteins and other newly formed materials from the endoplasmic reticulum, package them, and distribute them to other parts of the cell.
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What are chloroplasts?
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Green organelles that capture energy from sunlight and use it produce food for the cell.
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What are vacuoles?
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Large water-filled sac that are storage area for the cells.
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What are lysosomes?
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Small, round structures containing chemicals that break down certain materials in the cell.
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What are organelles?
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Carry out specific functions within the cell.
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What are organized into many-celled organisms?
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Tissues, organs, and organ systems.
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What are tissues?
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Groups of similar cells that work together to perform a specific function.
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What is an organ?
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Made of different kinds of tissues that function together.
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What is an organ system?
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A group of organs that work together to perform a major function.
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What are bacterial cells?
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Cell's genetic material which looks like a thick tangle string, found in the cytoplasm. Contain organnels and do not have a cell wall, cell membrane and nucleus.
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