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WorksheetsMicrobial Interactions - MicroCore Review Center
Total questions: 10
Worksheet time: 5mins
Which of the following is not true regarding Allee's Principle?
Both positive and negative interactions may occur even within a single population
Highly suitable for explaining density-independent interactions
With increasing population density, positive interactions could theoretically increase the growth rate to some asymptotic limit
Positive interactions predominate at low population densities and negative ones at high population densities
Which of the following is not true regarding symbiosis?
Interaction between populations existing in close association with each other
May involve either unicellular or multicellular organisms
Participants are not always represented at 1:1 ratio
They are only positive interactions (such as mutualism), separate from amensalism.
None of the aforementioned
Associations an be described in terms of the following, except:
Durability
Dependency
Specificity
Location
None of the aformentioned
Which of the following is an example of cooperation?
Marine nematode-bacteria
Lichen
Tube worm-bacteria
Termite and cellulolytic microorganisms
Flashlight fish and bioluminescent bacteria
Choose the best answer. Which type of interaction is observed when the wasteproduct of one microorganism is the substrate for another species?
Amensalism
Mutualism
Commensalism
Cooperation
Competition
Which of the following causes competition?
Modification of the environment to make it more suited for another
Abundance of resources
Overlap in the niche
Production of antimicrobials and metabolic products
Which of the following competitive phenotypes in microbes has an effect of disrupting other's competitive phenotype?
Inhibit quorum sensing
Type VI secretion systems (contact -dependent)
Production of structural and motility molecules
Siderophore secretion
Digestive enzyme secretion
Which of the following is not true about predation?
Predator engulfs or attacks the prey and normally results in the death of the prey
It is density independent
It requires the coexistence of the predator and prey
Impacts both prey and predator
Which is not an example of parasitism?
Ascaris suum - pigs
Yersinia pestis - humans
Nostoc - fungi
Ralstonia solanacearum - tomato
What type of interaction exists between Methanospirillum and Desulfonomonile tiedjei?
Cooperation
Commensalism
Competition
Predation
Mutualism
