CELS 191 Lecture 30

Question 1

how many prokaryotes are there on the plant

Answer 1

9.2 - 31.7 x 10^29

Question 2

what percent of the earths biomass is made up of prokaryotes

Answer 2

20-50%

Question 3

individual microbial cells of a species proliferate to form a _______. populations interact/communicate to from _________

Answer 3

population - community

Question 4

most organisms cannot be to have not been isolated in pure culture. how do we identify these organisms

Answer 4

identification is done using genetic fingerprints - currently there are millions of 16S rRNA sequences on file which act like molecular barcodes

Question 5

what is an enrichment culture

Answer 5

providing the temperature and chemical conditions in the lab that encourage the growth of specific groups of microbes

Question 6

for every reaction there is an equal and opposite reaction (reduction vs oxidation). the balance between the two will be different depending on…

Answer 6

the environment and the source of energy

Question 7

________ serve as intermediates to transfer energy inside of a cell

Answer 7

NADH/NADPH

Question 8

which trophic groups are primary producers

Answer 8

autotrophs (auto=self)

Question 9

what trophic groups are decomposers

Answer 9

heterotrophs

Question 10

chemotrophs use chemical energy from either:

Answer 10

C compounds - organic
non C compounds - inorganic

Question 11

light is a common resource for microbes, how do they avoid competition

Answer 11

they tune their antenna to different wavelengths of light