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12 Cards in this Set
- Front
- Back
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what does the cell theory state?
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1. all living things are made up of cells 2. cells are the basic unit of structure and function in living things 3. cells are formed from existing cells.
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cell
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basic unit of all forms of life
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nucleus
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the center of an atom, which contains the protons and neutrons; in cells, structure that contains the genetic material in the form of DNA.
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cell membrane
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thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell.
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eukaryote
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organism whose cells contain a nucleus.
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prokaryote
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unicellular organism that lacks a nucleus.
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how are proteins assembled?
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they are assembled on ribosomes.
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what does the nucleus contain?
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It contains nearly all the cell's DNA and, with it, the coded instructions for making proteins and other important molecules.
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what do vacuoles store?
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materials like water, salts, proteins, and carbohydrates
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Why do lysosomes do?
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They break down large molecules into smaller ones that can be used by the cell. Also, involved in breaking down organelles that have outlived their usefulness.
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what is the process of photosynthesis?
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When chloroplasts capture the energy from sunlight and convert it into food that contains chemical energy.
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what is the purpose of mitochondria?
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they convert the chemical energy stored in food into compounds that are more convenient for the cell to use.
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