Biochemistry FAU Haces Exam 1 Questions and Answers 100% Verified Solutions Graded A

intermolecular forces - forces between molecules EX: HCl-HCl intramolecular forces - hold atoms together in a molecule Ex: H-Cl Types of intramolecular forces - 1. Ionic 2. Covalent - Polar covalent - nonpolar covalent nonpolar covalent bond - bond between atoms with same electronegativity polar covalent bond - bond with unequal sharing of electrons the lower the pka the - stronger the acid Buffers are ___ - solutions that resist changes in pH when strong acids or bases are added Most buffers consist of a _____ - weak acid and conjugate base properties of water - 1. High BP 2. Melting point = 0 C 3. heat of vaporization 4. surface tension properties of living things: - structures serve purpose active energy transformation organized self replication What kind of bonds do carbon form? - covalent bonds what does H bond to in hydrogen bonding? - N or O define amphipathic/amphiphilic - - molecule with polar + nonpolar groups -H-bond donor and acceptor (water) (acid/base) From strongest to weakest, the intermolecular (weak forces) interactions are: - Ionic > Hydrogen bonds > Dipole-dipole > dipole-induced dipole > induced dipole-induced dipole when Carbon is bonded to anything that isn't Hydrogen or another Carbon, that bond can be considered __________. - polar What are 3 buffers? - Extracellular Intracellular Anserine Extracellular buffers - CO2 H2CO3 HCO3- pH = 7.4 Intracellular buffers - H2PO-4 HPO4-2 pH = 7.2 Anserine - buffer in neurons/brain