BISC207 Study Guide - Final Guide: Protist, Plant, Prokaryote

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC207
• Professor: Olabisi

Document Summary

It encodes proteins: central dogma: the pathway from dna to rna to protein and it describes the basic flow of info in a cell, dna, transcription: synthesis of rna from a dna template. Chapter 2: chemical basis of life: understand the key concept that life has chemical and physical. It specifies a particular element: atomic mass: # of protons plus neutrons. Isotopes: atoms of the same element that have different numbers of neutrons: example: carbon has carbon 12, 13 and 14. Ionic bonds: atoms that gain or lose electrons form ions, cations: ions with a positive net charge, anions: ions with a negative net charge. = hydrogen bonds: explain how the polarity and electronegativity properties of atoms. It is the ability of an atom to share electrons: the change in en of the 2 bonding atoms determines bond polarity. If en is small (0-0. 4) bond is nonpolar covalent. If en is intermediate (. 4-2. 0), bond is polar covalent.