The Cell Lecture 1 0.0 / 5 ? Human BiologyThe CellUniversityNone Created by: saraht83Created on: 01-05-16 15:28 Amino acids polymerise into... proteins 1 of 13 Purines and pyramidines polymerise into... polynucleotides which can directly guide the formation of exact copies of their own sequence 2 of 13 Plasma Membrane maintains homeostasis, is selectively permeable, communicates with outside environment, aids in binding and adhering. 3 of 13 Cell Theory cells are fundamental units of life, all organisms are composed of cells, cells come from pre-existing cells. 4 of 13 Cell surface limited by... surface-area:volume ratio 5 of 13 Surface area that interfaces with the cell's environment 6 of 13 Volume measure of space inside a cell 7 of 13 Increasing volume... decreases surface-area:volume ratio 8 of 13 Prokaryotic cells no nucleus, lack distinct organelles, some have cell walls, outside plasma membrane which maintains shape 9 of 13 Eukaryotic cells membrane-enclosed nucleus, compartments + organelles 10 of 13 Cell wall of bacteria made of peptidoglycan 11 of 13 Gram -ve bacteria outer layer of lipopolysaccharide encloses peptidoglycan layer 12 of 13 Mycoplasma bacteria with lack of cell wall, unaffected by some antibiotics 13 of 13
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