BIOL 1000 Lecture Notes - Lecture 3: Chemotroph, Ribose, Alpha Helix
31 Oct 2016
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Biol 1000 the cell and evolution (purple pgs 399-431) Predication: replacing batteries will fix problem: hypothesis 2: burnt-out bulb. The test will either falsify your hypothesis or test does not falsify hypothesis. Two major u(cid:374)if(cid:455)i(cid:374)g (cid:272)o(cid:374)(cid:272)epts of biolog(cid:455) : cell theory. All organisms are made up of cells (pattern) All cells come from pre-existing cells (mechanism) Therefore, all single-cell organisms in a population related to a common ancestor and all cells in a multicellular organism descend from an ancestral cell: theory of evolution. Characteristics of a population change over time (pattern) All organisms are composed of one or more cells. The cell is the smallest unit that has the properties of life. (ability to grow and divide, metabolic processes etc) Cells arise only from the growth and division of pre-existing cells. All forms of life are based on two distinct types of cells: prokaryotic and eukaryotic. Information in dna copied onto molecules of ribonucleic acid (rna)
