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science Practice

vocabulary words

TermDefinition
Cell basic unit of life.
Cell theory theory that states that all organisms are made of cells, all cells are produced by the other living cells, and the cell is the most basic unit of life.
Organelle(s) membrane-bound structure that is specialized to perform o distinct process within the cell.
Organism any individual living thing.
Cytology the structure and function of a plant and an animal cell.
Nucleus organelle composed of a double membrane that acts as the storehouse for most of a cells DNA.
Organism any individual living thing.
Diffusion movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration.
Osmosis diffusion of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration.
Active transport: energy-requiring movement of molecules across a membrane from a region of lower concentration to region of higher concentration.
Phagocytosis uptake of a solid particle into a cell by engulfing the particle; see endocytosis.
Pinocytosis when a liquid is ingested by a cell.
Semi-permeable allows certain substances to pass through it but others are not allowed to.
Mitochondria bean shaped organelle that supplies energy to the cell and has it's own ribosomes and DNA.
ribosomes organelle that links amino acids together to form proteins.
Cell wall rigid structure that gives protection, support and shape to cells in plants, algae,fungi and bacteria.
Centriole(s): small cylinder-shaped organelle made of protein tubes arranged in a circle; aids mitosis.
Chloroplast(s) organelle composed of numerous membranes that are used to convert solar energy into chemical energy; contains chlorophyll.
Phylum group of animals defined by structural and functional characteristics that are different from every other animal phylum.
Endoplasmic reticulum interconnected network of thin, folded membranes that produce, process, and distribute proteins.
viruses infectious particle made only of a strand of either DNA or RNA surrounded by a protein coat.
Created by: emilya15