BIO 205 Exam Questions With 100% Correct Answers

BIO 205 Exam Questions With 100% Correct Answers Nucleoid is a region/structure found only in ____ cells. a) prokaryotic b) eukaryotic c) bacterial d) Both A and C - answerProkaryotic/bacterial A plasmid is double-stranded DNA. True or false? - answerTrue A plasmid-gene or a chromosomal-gene (piece of DNA with a specific product) will always produce a________. a) carbohydrate b) ATP c) Protein d) Lipid - answerProtein DNA polymerase is a(n) a) lipid b) polysaccharide c) enzyme d) nucelic acid - answerc- enzyme DNA transcription is defined as a) the replication process of DNA b) the copying process of DNA c) the synthesis of a protein d) the ribosome synthesis - answerb- the copying process of DNA DNA Translation is defined as A. the replication process of DNA B. the copying process of DNA C. the synthesis of a protein D. the ribosome synthesis - answerc- the synthesis of a protein Can a bacterium "turn on" (stimulate) or "turn off" (inhibit) genes? - answerYes What % of genes are constantly expressed in bacteria? - answer80% Which bacterium is widely used in laboratory science? - answerE. coli What is a mutation? List a few mutagens - answerMutation= change in DNA Mutagens= ex: UV light, radiation, some medications, asbestos First step in identifying bacterial mutants indirectly with replica plating is based on bacterial A. DNA B. RNA C. nutrient requirements D. enzymes - answerc- nutrient requirements Ames test is the method of identifying A. mutants B. carcinogenic molecules C. bacteria D. both A and B - answerd- both A and B Transferring viral genetic material into bacterial cells is called A. transformation B. transduction C. conjugation D. motility - answerb- transduction Genetic engineering is based on A. transformation B. transduction