Practice Midterm but didnt post solutions
13: Which of the following electron acceptors is often only available for obligate anaerobes:
a) Mn
b) Fe
c) SO_(4)
d) O_(2)
14: In the summer in a highly stratified lake in a temperate habitat in the surface water there are:
a) Lots of nutrients
b) Very few nutrients
15: Which of the following chemicals is only used by a few taxa and thus can be important in shifting which taxa are dominant.
a) P
b) N
c) Si
d) S
e) Q
16: In the Nitrogen cycle, the place where you would expect to find an abundance of ammonium oxidation is:
a) areas with abundant nitrate
b) areas that are anoxic
c) water that has a significant proportion of N_(2)
d) aerobic sediment and water
17: Co-aggregation is the process in which
a) two microbes identify each other as beneficial to each other and then settle out of the water column, forming a biofilm
b) A microbe identifies that another microbe would be a useful member of the biofilm and so it recruits to the biofilm creating a successional pattern
c) involved Adhesins and saccharide molecules
d) all of the above
13: Which of the following electron acceptors is often only available for obligate anaerobes: a)Mn b)Fe cSO4 d) Oz
14: In the summer in a highly stratified lake in a temperate habitat in the surface water there are: a) Lots of nutrients b)Very few nutrients
15: Which of the following chemicals is only used by a few taxa and thus can be important in shifting which taxa are dominant a) P b)N c)Si d)s e)Q
16:In the Nitrogen cycle,the place where you would expect to find an abundance of ammonium oxidation is: a) areas with abundant nitrate b)areas that are anoxic c)water that has a significant proportion of N2 d) aerobic sediment and water
17: Co-aggregation is the process in which a) two microbes identify each other as beneficial to each other and then settle out of the water column, forming a biofilm b) A microbe identifies that another microbe would be a useful member of the biofilm and so it recruits to the biofilm creating a successional pattern c) involved Adhesins and saccharide molecules d)all of the above
