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l OM oAR cP SD | 21 95 3 57 5 Graded Exam 1
Question 1 Correct
4.50 points out of 4.50
- coli bacteria normally live in the human gut and produce vitamin K that the body
uses. This is best termed a relationship.
Select one:
- parasitic
- saprobic
- antagonistic
- mutualistic
Question 2 Correct
4.50 points out of 4.50
When microbes are in a close nutritional relationship and one benefits but the other is not harmed, it is called .
Select one:
- symbiosis
- commensalism
- mutualism
- synergism
BIO 250 EXAM 1 UNIT 9 MICROBIAL GENETICS ACTUAL
EXAM WITH ALL QUESTIONS AND 100% CORRECT
ANSWERS ALREADY GRADED A+/ BIO 250 LATEST EXAM
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BIO250_Saylor_V5 | Unit 9: Microbial Genetics
Started on April 18, , 4:26 PM
State Finished
Completed on April 18, , 4:43 PM
Time taken 16 mins 57 secs Grade 90.00 out of 90.00 (100%)
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l OM oAR cP SD | 21 95 3 57 5 Graded Exam 1
Question 4 Correct
4.50 points out of 4.50
A loopful of bacteria containing 1000 bacterial cells is inoculated into a nutrient broth and incubated. After a negligible lag phase, the culture goes into exponential growth for two hours. The generation time for the bacterium is fifteen minutes.Which equation is the correct one to determine the number of cells present after two hours of log phase growth?
Select one:
- 1000 X 2
8
- 1000 X 16
- 1000 X 2
2
- 1000 X 2 X 2 X 15
Question 5 Correct
4.50 points out of 4.50
The cell wall will help prevent the cell from bursting in conditions.
Select one:
- hypertonic
- hypotonic
- isotonic
- mesotonic
2/8
The phase of the bacterial growth curve that shows the maximum rate of cell division is the .
Select one:
- lag phase
- exponential phase
- stationary phase
- death phase
- prophase
Question 3 Correct
4.50 points out of 4.50
- / 2
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