EMES 446 Module 1
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Minus all the history mumbo jumbo
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26 Terms
Symbiosis
Living together of unlike organisms. (Measured by distance and time)
What is the larger organism referred to as in a symbiotic relationship
Host
Endosymbiont
Within host
Ectosymboint
On surface of host
More than one symbiont, host and all its symbionts
Holobiont
Multiple microbial species
Microbiome
A host that is without its symbiotic partner
Aposymbiotic
Horizontal Transmission
Cyclic occurrences of aposymbiotic and symbiotic phases in a host’s life cycle
Vertical transmission
Directly from parent to offspring
Which does not have an aposymbiotic stage? Horizontal or Vertical transmisson?
Vertical
What is this?
Pea Aphid
What symbiont aids Pea Aphids in synthesizing amino acids from plant phloem sap?
Buchnera
An obligatory relationship where there is some reciprocal benefit to both interacting partners
Mutualism
Both partners benefit from their non-obligatory interactions.
Cooperation
A relationship in which one symbiont (the commensal) benefits while the host is neither harmed nor helped
Commensalism
Relationship in which one partner is harmed and the other is unaffected (or benefits)
Amensalism
A microorganisms is defined as an organisms that is too small to be seen clearly with the naked eye and is usually smaller than
1mm
Which of the following historical figures is known for building the first microscope and discovering "animalcules"
Leewenhoek
Kitasato and Yersin proposed the double helix structure for DNA in 1944
False
Which of the following are true about the bacterial symbiont, Buchnera?
A and B
Which of the following is a third symbiotic partner recently found in lichens
Fungal yeast
Aposymbiotic hosts occur in horizontal but not vertically transmitted symbioses
True
Ectosymbiont
microbe in on the surface of a host
Endosymbiont
microbe is found within the host
extracellular symbiont
Microbe is in a body cavity or crypt but not inside host cells
intracellular symbiont
microbe found inside of host cells