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Biology 1108 Questions and Answers (100%
Correct Answers) Already Graded A+
Washington Ans: Where did the eruption of Mount Saint Helen take
place?
pyroclastic flow (plumice plan) Ans: during the eruption, this area got up
to 800ºF and afterwards was absent of all life, covered in 6ft of tephra,
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and looked like a moonscape
tephra Ans: mix of tiny glass particles formed by the cooling of magma
droplets and pulverized rock
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climate, disturbances, geology, hydrology, topography, soil type,
glaciation Ans: What are some examples of an abiotic environment?
species richness, biodiversity, species interactions, keystone species, and
invasive species Ans: What are some examples of biotic organisms?
temperate rainforest Ans: high species richness and high biodiversity
underground dens Ans: How did some mammals survive the eruption?
biological legacy Ans: carryover of living and dead, organic material
that was present beforehand
air, light, water, soil Ans: What are the 4 things plants need for survival?
50-75% water Ans: What percentage of plants is made up of water?
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25-50% Ans: What percentage of plants is made up of biomass?
Carbon 50%, Oxygen 42%, Hydrogen 1% Ans: What are the 3 structural
elements?
structural elements Ans: CO2, H2O, and O2 are needed in large
quantities to make the basic biomass/structure of plants
1.5% Ans: What percentage of nitrogen makes up a plant's biomass?
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DNA, ATP, Chlorophyll, Amino Acids Ans: Why do plants need Nitrogen?
nitrogen fixation Ans: the process of converting nitrogen into nitrous
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forms that plants can then access
nitrogen fixing bacteria Ans: bacteria that hangs out in soil or water and
can even form symbiotic relationships with the root nodules of some
plants
legumes Ans: bacteria that turns nitrogen into ammonium
nitrogenase Ans: only biological enzyme that can break the triple bond
in nitrogen
lighting Ans: What natural element can break the triple bond of
nitrogen?
denitrifying bacteria Ans: turns nitrogen gas using a special enzyme
called nitrogen reductase
1
Biology 1108 Questions and Answers (100%
Correct Answers) Already Graded A+
Washington Ans: Where did the eruption of Mount Saint Helen take
place?
pyroclastic flow (plumice plan) Ans: during the eruption, this area got up
to 800ºF and afterwards was absent of all life, covered in 6ft of tephra,
© 2026 Assignment Expert
and looked like a moonscape
tephra Ans: mix of tiny glass particles formed by the cooling of magma
droplets and pulverized rock
Guru01 - Stuvia
climate, disturbances, geology, hydrology, topography, soil type,
glaciation Ans: What are some examples of an abiotic environment?
species richness, biodiversity, species interactions, keystone species, and
invasive species Ans: What are some examples of biotic organisms?
temperate rainforest Ans: high species richness and high biodiversity
underground dens Ans: How did some mammals survive the eruption?
biological legacy Ans: carryover of living and dead, organic material
that was present beforehand
air, light, water, soil Ans: What are the 4 things plants need for survival?
50-75% water Ans: What percentage of plants is made up of water?
, For Expert help and assignment handling,
2
25-50% Ans: What percentage of plants is made up of biomass?
Carbon 50%, Oxygen 42%, Hydrogen 1% Ans: What are the 3 structural
elements?
structural elements Ans: CO2, H2O, and O2 are needed in large
quantities to make the basic biomass/structure of plants
1.5% Ans: What percentage of nitrogen makes up a plant's biomass?
© 2026 Assignment Expert
DNA, ATP, Chlorophyll, Amino Acids Ans: Why do plants need Nitrogen?
nitrogen fixation Ans: the process of converting nitrogen into nitrous
Guru01 - Stuvia
forms that plants can then access
nitrogen fixing bacteria Ans: bacteria that hangs out in soil or water and
can even form symbiotic relationships with the root nodules of some
plants
legumes Ans: bacteria that turns nitrogen into ammonium
nitrogenase Ans: only biological enzyme that can break the triple bond
in nitrogen
lighting Ans: What natural element can break the triple bond of
nitrogen?
denitrifying bacteria Ans: turns nitrogen gas using a special enzyme
called nitrogen reductase
