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weak bond formed by the attraction of positively charged hydrogen atoms to negatively charged atoms
property of a molecule with oppositely charged ends. because of it, water is able to dissolve many different substances
Type of lipid, A long, straight hydrocarbon chain with a carboxyl group attached at one end
a lipid made of phosphate group (hydrophilic head) and two fatty acids (hydrophobic tails). forms cell membrane.
determines a molecule's function. is hydrphilic. includes the hodroxl, carboxyl, carbonyl, amino, phosphate groups.
A chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.
A research method whereby a problem is identified, a hypothesis stated, and hypothesis is tested
idea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells
A cell characterized by the presence of a nucleus and other membrane-bound organelles. either unicellular (protists) or multicellular (fungi, plants and animals).
describes a cell that does not have a nucleus or anyother membrane-covered organelles; also called bacteria.
polysaccharide consisting of glucose monomers that reinforces plant-cell walls. Tougher than other polysaccharides. for structure
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