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Keystone-Vocab Review Cells General

Unit 1 and 2 vocab

BiologyThe scientific study of life.
HypothesisA proposed scientifically testable explanation for an observed phenomenon.
Law (Scientific)A law that generalizes a body of observations. At the time it is made
Mechanism (Scientific)The combination of components and processes that serve a common function.
ScienceA body of evidence based knowledge gained through observation and experimentation related to the natural world and technology.
Principle (Scientific)A concept based on scientific laws and axioms (rules assumed to be present
Theory (Scientific)An explanation of observable phenomena based on available empirical data and guided by a system of logic that includes scientific laws; provides a system of assumptions
CellThe basic unit of structure and function for all living organisms.
ChloroplastAn organelle found in plant cells and the cells of other eukaryotic photosynthetic organisms where photosynthesis occurs.
ChromosomesA single piece of coiled DNA and associated proteins found in linear forms in the nucleus of eukaryotic cells and circular forms in the cytoplasm of prokaryotic cells; contains genes that encode traits. Each species has a characteristic number of chromosomes.
EukaryoteA type of organism composed of one or more cells containing a membrane bound nucleus
Endoplasmic Reticulum (ER)An organellecontaining folded membranes and sacs, responsible for the production, processing, and transportation of materials for use inside and outside a eukaryotic cell.
ExtracellularLocated outside a cell.
Golgi ApparatusAn organelle found in eukaryotic cells responsible for the final stages of processing proteins for release by the cell.
IntracellularLocated inside a cell.
MitochondrionA membrane bound organelle found in most eukaryotic cells; site of cellular respiration
MulticellularMade up of more than one cell.
NucleusA membrane bound organelle in eukaryotic cells functioning to maintain the integrity of the genetic material and
OrganelleA subunit within a cell that has a specialized function.
Plasma MembraneA thin phospholipid and protein molecule bilayer that encapsulates a cell and controls the movement of materials in and out of the cell through active or passive transport.
PlastidsA group of membrane bound organelles commonly found in photosynthetic organisms and mainly responsible for the synthesis and storage of food.
Prokaryote, A single‐celled organism that lacks a membrane‐bound nucleus and specialized organelles.
RibosomeA cellular structure composed of RNA and proteins that is the site of protein
UnicellularMade up of a single cell.


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