BIO 200 FINAL EXAM LATEST / BIO200 FINAL EXAM QUESTIONS AND ANSWERS REAL EXAM QUESTIONS|GRADED A+

BIO 200 FINAL EXAM LATEST / BIO200 FINAL EXAM QUESTIONS AND ANSWERS REAL EXAM QUESTIONS|GRADED A+ Which of the following about the nitrogen cycle is false? a)Nitrogen-fixing bacteria exist on the root nodules of legumes and in the soil. b)Ammonification is the process by which ammonium ion (NH4+) is released from decomposing organic compounds. c)Nitrification is the process by which nitrites (NO2-) are converted to ammonium ions (NH4+). d)Denitrifying bacteria convert nitrates (NO3-) into nitrogen gas (N2). -CORRECT ANSWER-- c)Nitrification is the process by which nitrites (NO2-) are converted to ammonium ions (NH4+). The first forms of life on Earth were thought to be... -CORRECT ANSWER-- Prokaryotes Microbial mats... -CORRECT ANSWER-- are multi-layered sheet of prokaryotes including mostly bacteria but also archaea The first organisms that oxygenated the atmosphere were -CORRECT ANSWER-- cyanobacteria The presence of a membrane-enclosed nucleus is a characteristic of.... - CORRECT ANSWER-- eukaryotic cells Which of the following consist of prokaryotic cells? -CORRECT ANSWER-- bacteria and archaea Prokaryotes that obtain their energy from chemical compounds are called _____ -CORRECT ANSWER-- Chemotrophs Plants use carbon dioxide from the air and are therefore called _____. - CORRECT ANSWER-- producers What event is thought to have contributed to the evolution of eukaryotes? -CORRECT ANSWER-- oxygenation of the atmosphere Which characteristic is shared by prokaryotes and eukaryo