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Cell Vocab

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PRESENTATION OUTLINE

Science Flash Cards

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CELL THEORY

THE HISTORIC SCIENTIFIC THEORY THAT LIVING THINGS ORGANISMS ARE MADE UP OF CELLS

NUCLEUS

An organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane
Photo by Exothermic

DNA

Deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent
Photo by M Pinarci

ORGANELLE

any of a number of organized or specialized structures within a living cell

BACTERIA CELL

A gel-like matrix composed of water, enzymes, nutrients, wastes, and gases and contains cell structures

CYTOPLASM

the material or protoplasm within a living cell, excluding the nucleus

CELL MEMBRANE

separates the interior of all cells from the outside environment

CELL WALL

a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria

CHLOROPLAST

a plastid that contains chlorophyll and in which photosynthesis takes place

MITOCHONDRIA

an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur
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VACUOLE

a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid
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PHOTOSYNTHESIS

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water

CELLULAR RESPIRATION

a set of metabolic reactions and processes that take place in the cells of organisms
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RIBOSOME

a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells
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ANIMAL CELL

eukaryotic cells or cells with a membrane-bound nucleus

PLANT CELL

the basic unit of life in organisms of the kingdom Plantae

DIFFUSION

the intermingling of substances by the natural movement of their particles
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LYSOSOME

an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane
Photo by TheJCB

ENDOPLASMIC RETICULUM

a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane
Photo by hanacy

Golgi body

a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion

VESICLES

a small fluid-filled bladder, sac, cyst, or vacuole within the body

OSMOSIS

a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution

Equilibrium

a state in which opposing forces or influences are balanced