MCB 301 Final Exam Questions and Answers | 100% Pass
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Course
MCB 301
Institution
MCB 301
MCB 301 Final Exam Questions and
Answers | 100% Pass
Which of the following statements about antibiotics is TRUE? - Answer️️ -Incorrect
Some antibiotics work by binding the 40S ribosomal subunit.
Incorrect Most of the earth's microorganisms have been tested for antibiotic production.
Incor...
Answer✔️✔️-Arsenic is not selective against just bacteria (like antibiotics), but it is also
toxic to the eukaryotic host. (2 pts)
Why does Mycobacterium smegmatis not Gram stain well? What is the name of the
type of staining normally used to stain this bacterium? Note: To fully answer this
question you will have to check the Brock textbook or other reliable source. -
Answer✔️✔️-The surface of Mycobacterium contains lots of mycolic acids bound to the
peptidoglycan. (1 pt)
To properly stain Mycobacterium it should be acid-fast stained. (1 pt)
One of the assigned readings described genome mining and its use to discover
potentially new phosphonic acid products. The genomes of Actinomycetes were
searched for which gene and why? - Answer✔️✔️-The pepM gene (gene that encodes
phosphoenolpyruvate mutase) was used (1 pt) because known phosphonate
biosynthetic pathways often involve this gene product (1 pt).
Which of the following does not contain 16S rRNA: viruses, archaea, bacteria, eukarya?
Also, explain why? - Answer✔️✔️-Viruses do not have ribosomes (1 pt).
Eukarya have 18S rRNA (1 pt).
pRL27 contains all of the following EXCEPT
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