BIO270H1 Lecture Notes - Lecture 2: Circadian Rhythm, Endocrine System, Conformational Change
Document Summary
Lecture 2 (september 23, 2015): biochemical basis of psychology. Reading: pg 38-77 nervous system and endocrine system are most important for the control of homeostasis. Thermodynamics: thermodynamics determines if the reaction will occur. 1st law (law of conservation of energy): energy can be converted, but the total amount of energy remains constant. G is negative energy must released for reaction to occur: endergonic. G is positive energy must be absorbed for reaction to occur enzymes couple with reactions so that energy can be captured and stored to be used later by the animal. Chemical bonds energy is stored in chemical bonds covalent: connect atoms by sharing electrons: strong, non-covalent: organizes molecules into structures, weak. Non-covalent: controls macromolecule structure arise between atoms with uneven distribution of electrons. O pulls electrons in (more attraction), electrons spend more time with o. Water leaves: cells swell in hypotonic solution.
