Name Chrisien Caldwell Hour Exam 5 Chemistry 101 Dr. Hellwig December 6, 2017 1.
ID: 694876 • Letter: N
Question
Name Chrisien Caldwell Hour Exam 5 Chemistry 101 Dr. Hellwig December 6, 2017 1. Comparing aerobic bacteria and anaerobic bacteria: a) aerobic bacteria need water and anaerobic bacteria dont b) aerobic bacteria need air and anaerobic bacteria don't c) aerobic bacteria produce bad smells and anaerobic bacteria don't d) aerobic bacteria live in the air and anaerobic bacteria live in water 2. The higher the BOD: a) the more polluted the water is c) the more acidic the water is b) the less polluted the water is d) the more basic the water is 3. "Eutrophication" means: a) clean air c) good health b) excessive plant growth d) pure water 4. Phosphates in streams and lakes used to come mainly from: a) detergents c) car exhaust b) mining d) coal-fired power plants 5. Phosphates in streams and lakes now come mainly from: a) car exhaust c) fertilizers b) coal-fired power plants d) pesticides 6. One definition of reduction is: a) more bonds to oxygen c) gain of electrons b) fewer bonds to hydrogen d) fewer bonds to water 7. In this reaction C6H6 + Na C5H8+ Na", the oxidizing agent is 8. In this reaction CMO + Cro, C3H02 +CrO2, what material is being oxidized? 9. Which of these metals may be found in its pure form (not as an ore) in the ground? a) aluminum b) gold c)irond) lead 10. The main element in steel is: a) carbon b) iron c) lead d) tinExplanation / Answer
1. The correct answer is option B.
Aerobic bacteria are a class of bacteria that require oxygen for their growth and survival. They use oxygen to derive energy as well as carry out major metabolic activities.
Whereas anerobic bacteria cannot survive in the presence of oxygen. They infact get killed when subjected to oxygen rich environment. These bacteria use chemicals to obtain energy required for their cellular activities.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.