Flashcard Set Science
Quarter 1
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Find the key terms from first quarter
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Terms and definitions
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- isotope
- One of two or more atoms with the same atomic number but with different numbers of neutrons
- ionic
- The dialect of Ancient Greek spoken and written in Attica and Athens and ___
- covalent
- Of or relating to or characterized by ___
- lipid
- An oily organic compound insoluble in water but soluble in organic solvents
- nucleotide
- A phosphoric ester of a ___
- catalyst
- A substance that initiates or accelerates a chemical reaction without itself being affected
- exothermic
- Occurring or formed with the liberation of heat
- endothermic
- Occurring or formed with absorption of heat
- enzyme
- Any of several complex proteins that are produced by cells and act as catalysts in specific
- substrate
- The ___ that is acted upon by an enzyme or ferment
- activesite
- The part of an enzyme or antibody where the chemical reaction occurs
- phospholipid
- Any of various compounds composed of fatty acids and ___ acid and a nitrogenous base
- eukaryote
- An organism with cells characteristic of all life forms except primitive microorganisms such
- prokaryote
- A unicellular organism having cells lacking membrane-bound nuclei
- nucleus
- Center of an atom or a cell
- nucleolus
- A small round body of protein in a cell ___
- lysosome
- An organelle found in the cytoplasm of most cells
- reticulum
- Any fine network
- membrane
- A pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
- ribosome
- An organelle in the cytoplasm of a living cell
- chloroplast
- Plastid containing ___ and other pigments
- diffusion
- The process in which there is movement of a substance from an area of high concentration of
- osmosis
- Diffusion of molecules through a semipermeable membrane from a place of higher concentration to
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