1.) Define the following terms. (3 points each)

 a.) NADH Dehydrogenase

 b.) Ecosystem

 c.) Primary Production

d.) Algae

 e.) Biofilm

 f.) Enrichment Culture

 g.) Acridine Orange

 h.) Microbial Mats

 i.) Biogeochemical Cycle

 j.) Nitrification

 2.) Draw and label a typical antibody molecule. Please be complete. (10 points)

 3.) Name the three phases in the aerobic respiration of glucose and tell me the two or three most important events occurring in each of the phases. (10 points)

 4.) Compare and contrast terrestrial and aquatic environments in terms of their primary producers, major energy source and major carbon source. (5points)

 5.) Match the following. (2 points each)

 a.) Thiobacillus          Symbiotic Nitrogen Fixer ______

 b.) Nitrobacter           Hydrothermal vents ______

 c.) Pseudomonas        Non-Symbiotic Nitrogen Fixer _____

 d.) Azotobacter          Nitrification _____

 e.) Rhizobium             Denitrification _____

 6.) Fill in the blanks. (2 points each)

 a.) Nitrogen gas makes up almost _________ percent of our atmosphere. Despite this abundance no _______________ is able to make direct use of it.

 b.) Plants tend to use ____________ as their source of nitrogen for protein synthesis because it is highly ___________ in soil and not easily _____________ to negatively charged clay particles.

 c.) Nitrogen Fixation is the conversion of atmospheric nitrogen gas to ______________.

 d.) The immediate environmental surroundings of a microbial cell or group of cells is called a _____________________.

 e.) In a natural environment ______________ among microbes for available nutrients can be intense.

 f.) In the electron transport system carriers are bound to the _____________ and are arranged in order of their ___________ potential.

 7.) Describe the Carbon Cycle and tell me why it is important. (15 points)
 
 
 
 

Text and Instructor

Text: Microbiology, Prescott, Harley and Klein, Fourth Edition

Instructor: Michael T. Gallagher Ph. D.

Grading

There are four exams in environmental microbiology three section exams (see topics) and a comprehensive final. Each exam, including the comprehensive final, counts as 100 points. The laboratory component of the course also counts as 100 points. The final course grade is determined by totaling the points earned and dividing by 5. The following grade scale will be applied.

A- = 90 to 92.99

B+ = 87 to 89.99

B = 83 to 86.99

B- = 80 to 82.99

C+ = 77 to 79.99

C = 73 to 76.99

C- = 70 to 72.99

D = 60 to 69.99

F = Below 60

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