1 Microorganisms are essential in the_of elements in the biosphere.
2 _organisms fix carbon dioxide into_compounds. These are _ by heterotrophs and carbon dioxide is returned to the
3 Nitrogen-fixing bacteria need to keep the interior of their cells oxygen-free because of the sensitivity of the_towards oxygen.
4 The release of inorganic nutrients from organic compounds as a result of microbial metabolism is termed__
5 Powdered_is added to alkaline soils in order to encourage the activity of__bacteria, which leads to a reduction in pH.
6 Certain photosynthetic bacteria are able to use hydrogen sulphide as a _of_in the reduction of carbon dioxide.
7 _often acts as the limiting nutrient in an ecosystem, because it is only available in an insoluble form.
8 The_are the major group of bacteria found in a typical soil.
9 _are complex populations of microorganisms held together within a polysaccharide matrix.
10 The microbial population of a aquatic habitat is influenced by the availability of_and__
11 The profundal zone is the name given to deep waters characterised by the absence of__
12 In the benthic zone, the microbial population comprises mostly_
13 A high organic content in a body of water encourages the growth of _, which may lead to a depletion of available__
14 Unicellular photosynthesisers such as the_and_are collectively termed__
15 Molecular techniques such as FISH ( _ _ _
_) enable the detection of microorganisms it is not possible to culture by conventional means.
16 The effectiveness of a wastewater treatment regime may be judged by the reduction in the___(_).
17 The two forms of secondary wastewater treatment are__
18 In anaerobic digestion, organic matter is converted into _ and
19 The principal component of wood that is susceptible to biodeterioration is __However the white rot fungi can also degrade__
20 The dry rot fungus Serpula lacrymans is able to conduct water via thick strands of hyphae called__
Was this article helpful?
Sick And Tired Of Your Constant Cough? Is Your Bad Immune System Leading You To The Path Of Fever And Sore Chest? You Sure Have A Reason To Panic BronchitisThere Is Always A Way Out And, This Is It Finally Discover Some Of The Most Effective Tips That Can Curb Bronchitis, And Its Repeated Bouts Learn How To Keep The Chronic Cough, And Sore Chest Away Breathe Free, And Feel The Whiff Of Fresh Air, With No Hassles