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MCB3020 BACUSMO FINAL EXAM (CUMULATIVE) QUESTIONS AND ANSWERS
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MCB3020 BACUSMO FINAL EXAM (CUMULATIVE) QUESTIONS AND ANSWERS
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Name: Score:461 Multiple choice questions
Term 1 of 461
The science dealing with classification is called _________.
taxonomy
The nucleotide sequence in DNA.
hot vents
iodine
Term 2 of 461
Which of the following organelles is involved in the modification packaging, and secretion of
materials?
ribosomes
chloroplast
golgi apparatus
endoplasmic reticulum
Term 3 of 461
In eukaryotes, the initiator tRNA for translation is _________.
Phe-trnaiphe, which is specific to bacteria
Met-tRNAiMet, which is also used by archaea
Leu-trnaileu, common in plants
Gly-trnaigly, found in viruses
,Term 4 of 461
Horizontal gene transfer is the transfer of DNA_______
Within the same organism
During meiosis
Through asexual reproduction
Between different genomes
Term 5 of 461
Scientists study microorganisms on Earth today to search for life forms elsewhere, as well as to
explore the origins of life on Earth. These microorganisms that are studied are referred to as
_________.
Resistance
extant
Attenuated
True
Term 6 of 461
T/F: In a frameshift mutation all of the amino acids before the shift are changed.
True
False
Term 7 of 461
Compare and contrast horizontal and vertical gene transfer.
HORIZONTAL: -genes from one independent, mature organism transferred to another
mature organism-conjugation-transduction-transformationVERTICAL: -fusion of
gametes-from parent to offspring-crossing-over between sister chromosomes during
meiosis
Adaptive immunity
Golgi apparatus
Microfilaments
,Term 8 of 461
Prior to staining, smears of microorganisms must be heat-fixed in order to______.
reduce the time needed for staining
attach them firmly to the slide
prevent contamination of the stains
enhance the color contrast of the stains
Term 9 of 461
The term used to describe bacteria that have a spherical shape is _________.
True
coccus
False
silent
Term 10 of 461
What is an example of mesophilic fermentation?
vaccine consisting of dead microbes or their fragments that can neither replicate or
mutate to a more virulent form
Flushing and Lysozyme
buttermilk, sour cream
disease that results from an infection by microbial agents
Term 11 of 461
Which of the following gradients can form a biofilm?
oxygen, nutrient, and/or pH
vertical gene transfer
coccus
lysozyme
, Term 12 of 461
The concept that living organisms arise from nonliving material is called _________.
spontaneous combustion
spontaneous generation
biogenesis
abiogenesis
Term 13 of 461
The most likely source of the Taq polymerase used in PCR is a bacterium that lives in _________.
hot vents
volcanic craters
deep sea trenches
glacial ice
Term 14 of 461
What best describes translation?
Dna-->rna (rna polymerase reading a dna template to make rna)
RNA-->Protein (ribosomes reading messenger RNA to produce protein)
Eukaryotes (algae)
Some chromosomal genes not on the plasmid are transferred.
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