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Cells

TermDefinition
Cell Theory Cells are the basic units of all living things; all living things are made of cells; all cells are made of pre-existing cells.
Cell Wall Rigid structure which surrounds plant cells and provides support.
Cytoplasm Gel-like liquid that fills the cell; gives structure and suspends the organelles.
Cell Membrane Surrounds the cytoplasm of the plant and animal cell; it regulates what can enter and leave the cell.
Nucleus Control center of the cell; it stores the genetic code in its DNA.
Mitochondria Powerhouse of the cell; it releases energy.
Vacuole Storage unit for water, nutrients and wastes. The vacuole in the plant cell is much larger than in the animal cell.
Chloroplast Found only in plant cells it contains chlorophyll which through the process of photosynthesis converts solar energy into chemical energy in the form of glucose (sugar).
Unicellular One-celled living organisms.
Multicellular Many celled living organisms.
Prokaryote Cells without a nucleus.
Eukaryote Cells with a nucleus.
Ribosomes Organelle that makes proteins for the cell.
Cell The basic unit of structure and function in living things.
Tissues A group of similar cells that work together to perform a specific function.
Organs A group of different tissues that work together to perform a complex function.
Organ System A group of organs that work together to perform a complex function.
Circulatory System Transports oxygen, nutrients and other needed materials to cells; transports wastes and carbon dioxide away from cells.
Respiratory System Exchanges oxygen and carbon dioxide between the body and the external environment.
Excretory System Removes wastes produced by the body.
Integumentary System Provides a barrier between the body and the external environment.
Endocrine System Secretes hormones that regulate body functions.
Immune System Protects against disease.
Turgor Pressure Pressure exerted on the cell wall of a plant cell from the water contained in the vacuole.
Homozygous Pair of identical alleles.
Heterozygous Pair of alleles where one is dominant and the other recessive.
Created by: lauriemerrick
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