Lab 8: Yeast Flashcards
population ecology
-how individuals of a given species interact w/ their environment
community ecology
-how members of a different species interact w/ a given habitat
ecosystem ecology
-how different communities interact and how the environment affects community dynamics and structure
biotic factors
- living factors (organisms)
- community ecology focuses more on this
abiotic factors
- non-living factors (the environment)
- population and ecosystem ecology focus more on this
local populations
- very small
- consist of organisms of a single species in a small pond
population
-a group of individuals of the same species inhabiting a given area
metapopulations
-sets of local populations connected by dispersing individuals
four ways population size changes
- birth
- death
- immigration
- emigration
carrying capacity
-the maximum # of individuals of a given species that a particular habitat can support
what type of environment would populations not last long in?
- small habitats
- changing habitats
- harsh environments
yeast characteristics
- unicellular fungal eukaryotic
- heterotrophic
- model organism
- considered a lifestyle since it includes any unicellular fungus
which yeast are mono/para/polyphyletic?
- budding yeast are monophyletic
- yeast as a whole is polyphyletic
how does yeast reproduce?
-both sexually and asexually
how do yeast asexually reproduce?
- budding (by mitosis)
- occurs when clonal daughter cells pinch off their mother cells
- can be done by both haploid and diploid yeast cells
