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16 Cards in this Set

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eukaryote
an organism that has a nuclear membrane surrounding genetic material and has other membrane-bound organelles in the cytoplasm
prokaryote
an organism without a nucleus
molecule
a structure composed of two or more atoms held together by chemical bonds
cytoskeleton
a system of protein microfilaments and microtubules that allow the cell to have a characteristic shape
organelle
a cytoplasmic structure that has a specialized function
endoplasmic reticulum (ER)
a system of cytoplasmic membranes arranged into sheets and channels that functions in synthesizing and transporting gene products
golgi apparatus
membranous organelles; they sort, modify, and package proteins synthesized by ER
lysosomes
organelles that are membrane enclosed; they contain digestive enzymes
mitochondria
membrane-bound organelles; sites of energy production in all eukaryotic cells
nucleus
membrane-bound organelle that contains the chromosomes
nucleolus
a nucleus region that functions in the synthesis of ribosomes
chromatin
the component material of chromosomes, visible as clumps or threads in nuclei under the microscope
chromosomes
the thread like structure in the nucleus that carries genetic info
gene
the fundamental unit of heredity
homologues
members of a chromosomal pair
diploid
the condition in which each chromosome is represented twice as a member of a homologous pair