HUBS1403 Lecture 1: HUBS 1403 Summary

• School: University of Newcastle
• Department: Human Biosciences
• Course: HUBS1403
• Professor: Judith

Document Summary

Atoms molecules cells tissue organ organ system organism. Stimulus detection afferent efferent response. Subatomic particles protons (+), neurons (-), electrons (-+) Atomic mass number of protons, neutrons and electrons. Isotope different number of neutrons, same number of protons. Chemical bonds: hydrogen attraction between small positive charge on h and small negative charge on o. Ionic attraction between anions and cations e. g. nacl: covalent shares an electron to become stable e. g. ch4. Non-polar ele(cid:272)t(cid:396)o(cid:374)s sha(cid:396)ed e(cid:395)uall(cid:455), (cid:374)eut(cid:396)al, h(cid:455)d(cid:396)opho(cid:271)i(cid:272) (cid:894)does(cid:374)(cid:859)t att(cid:396)a(cid:272)t (cid:449)ate(cid:396)(cid:895) Polar unequal sharing of electrons, slightly positive or negative, hydrophilic (attracts water) Mole quantity (in grams) equal to that substances atomic or molecular weight. Chemical reactions: catabolism breaking down, anabolism synthesise to form, building up, exchange swapping, reversible ab breaks down to a + b, a + b forms ab. Monosaccharides simple sugar, 3-7 carbon atoms e. g. glucose. Disaccharides 2 monosaccharides joined together by dehydration synthesis e. g. lactose. Polysaccharides synthesised by linking mono- or di- saccharides e. g. glycogen.