MB Ch 5 (1st Half) 2 Of 3 Question Preview (ID: 1109)


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Some bacteria can ___________________, which no other organisms can do
a) fix inorganic nitrogen into organic nitrogen compunds
b) fix inorganic carbon into organic carbon compunds
c) live near volcanoes
d) photosynthesize

Cyanophytes are crucial to life because scientists think that
a) Photosynthesis evolved in cyanophytes
b) Cyanophytes convert carbon dioxide into nitrogen
c) Cyanophytes are old
d) Cyanophytes are blue green

Cyanophytes are crucial to life because scientists think that
a) Cyanophytes created the oxygen in the atmosphere
b) Cyanophytes convert carbon dioxide into nitrogen
c) Cyanophytes are old
d) Cyanophytes are blue green

Taxonomists define algae as those organism that
a) belong in one of the seven specific phyla in Kingdom Protista
b) have chlorophyoll and are not plants
c) loosely fit the term and belong in one of the seven specific phyla in Kingdom Protista
d) loosely fit the term

______________________ make up phylum Bacillariophyta
a) Diatoms
b) Prokaryotes
c) Bacteria
d) Dinoflagellates

Diatoms account for ________________ of the photosynthetic biomass on Earth
a) 25%
b) 10%
c) 50%
d) 99%

____________________ make up phylum Dinophyta
a) Dinoflagellates
b) Bacteria
c) Diatoms
d) Prokaryotes

Genus Symboiodium is important to coral reefs because it lives inside coral polyp and provides coral with food via photosynthesis
a) true
b) false
c)
d)

Chlorophyll a is a pigment
a) that is directly involved in photosynthesis
b) that assists chlorophyl b to capture light
c) that has no role in photsynthesis
d) found only in cyanophytes

Red algae can live deeper than other algae because they produce cellulose which resists water pressure better
a) false
b) true
c)
d)

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