BIOD 102 Final Exam questions and verified correct answers

Silent Substitution - correct answer Occur becuase of the redundancy of the genetic code Point Mutation - correct answer Occur when a single nucleotide is changed within a gene Frameshift Mutation - correct answer Can have three different outcomes arising from the alteration of the triplet-codon reading frame. Insertion Mutation - correct answer Occurs from the gain of nucleotides within a gene Endocrine Signaling - correct answer Long-term signaling that regulates blood pressure, blood volume and energy metabolism. Autocrine Signaling - correct answer Local signaling where the ligand is not transported trough the blood but instead diffuses across a short distance. Synaptic Signaling - correct answer Local signaling where the ligand diffuses across a synapse Pheromone Signaling - correct answer Ligands are released into the external environment to mark territory or attract mates. Falling Phase - correct answer K+ ions flow out of the cell, making the cell more negative Depolarization - correct answer Na+ ions flow out of the cell, Rising Phase - correct answer Positive feedback causes opening of more Na+ channels