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MCB2010C FINAL EXAM PRACTICE Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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MCB2010C FINAL EXAM PRACTICE Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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  • June 19, 2024
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  • 2023/2024
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  • mcb2010c final exam practice questions with 100

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MCB2010C FINAL EXAM: PRACTICE
What is used to determine the identity, abundance, and relative activity of
microorganisms in an environment and can be used to detect bacteria that have not
been cultured. - ANS-Fuorescent in situ hybridization (FISH)

What is currently being used to determine the phylogenetic relationships among
organisms. - ANS-RIBOTYPING

What has little to do with phylogenetic relationships but are invaluable for identification
of microorganisms - ANS-DICHOTOMOUS KEY

Which of the following is NOT a characteristic of the non-endospore-forming
gram-positive rods? - ANS-Are nonpathogenic

Which are characteristics of the non-endospore-forming gram-positive rods? - ANS-1-
Are aerotolerant
2- Carry out fermentative metabolism
3- Don't produce endospores
4- Lack cell walls

A primary difference between cyanobacteria and purple and green phototrophic bacteria
is: - ANS-Electron donor for CO2 reduction.

Similarities between cyanobacteria and purple and green phototrophic bacteria are: -
ANS-1- Energy source.
2- Cell wall type.
3- Cell type.
4- Color.

Salmonella, Shigella, Yersinia, and Serratia are all - ANS-Gram-negative facultatively
anaerobic rods.

Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all
17 patients, Elastoplast bandages were placed over sterile gauze pads to cover
wounds. Fourteen of the patients had surgical wounds, two had venous line insertion
sites, and one had a bite wound. Lesions present when the bandages were removed
ranged from vesiculopustular eruptions to ulcerations and skin necrosis requiring

, debridement. Fungi are more likely than bacteria to contaminate bandages because: -
ANS-They can tolerate low-moisture conditions.

In mid-December, a woman with insulin-dependent diabetes who had been on
prednisone fell and received an abrasion on the dorsal side of her right hand. She was
placed on penicillin. By the end of January, the ulcer had not healed, and she was
referred to a plastic surgeon. On January 30, a swab of the wound was cultured at 35°C
on blood agar. On the same day, a smear was made for Gram staining. The Gram stain
showed large (10 µm) cells. Brownish, waxy colonies grew on the blood agar. Slide
cultures set up on February 1 and incubated at 25°C showed septate hyphae and single
conidia. The most likely cause of the infection is a - ANS-Dimorphic fungus

Multinucleated amoebalike cells that produce funguslike spores are called: -
ANS-Plasmodial slime mold

Which of the following groups of algae does NOT produce compounds that are toxic to
humans? - ANS-Green algae

In a food chain consisting of the following organisms, which acts as a producer? -
ANS-Lichens

Which of the following statements provides the most significant support for the idea that
viruses are nonliving chemicals? - ANS-They cannot reproduce themselves outside a
host.

Which of the following is NOT used as a criterion to classify viruses? - ANS-Biochemical
tests

Which of the following are used as a criterion to classify viruses? - ANS-1- Morphology
2- Nucleic acid
3- Size
4- Number of capsomeres

The definition of lysogeny is: - ANS-Phage DNA is incorporated into host cell DNA.

What is necessary for replication of a prion? - ANS-PSc

What is NOT necessary for replication of a prion? - ANS-1- DNA
2- DNA polymerase
3- Lysozyme

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