BIOL 200 Study Guide - Pseudouridine, Rna, Nucleoplasm

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Noncovalent interactions: ionic interactions, hydrogen bonds, van dar walls interactions: ionic interactions; nacl has strong interaction, dissolve happily in water because it forms. Monomers to polymers: amino acids polypeptide (peptide bond for protein); nucleotide nucleic acid (phosphodiester bond); monosaccharide polysaccharide (glycosidic bond); in each case, when addition of monomer, molecule of water is released; all covalent bonds. Hydroxyl group of tyrosine can be modified by phosphorylation (altered to phosphate group, highly charged, activates or inactivates protein: hydrophilic amino acids: Basic: lysine (lys or k, moderate), arginine (arg or r, strong), histidine (his or h, weak) Acidic: aspartate (asp or d), glutamate (glu or e) Polar amino acids with uncharged r groups: serine (ser or s), threonine (thr or t), Cysteine: can disulfide bridge, covalent bond in extracellular space ie plasma, oxidizing ambient; in cytoplasm not bonded, so reducing ambient. Slide 1: lampbrush chromosome: site of rna synthesis.

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