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organism > Autotrophy and energy flow > Flashcards

Autotrophy and energy flow Flashcards

1
Q

From where organism get their energy

A

environment or eat other organism

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2
Q

what are the two types of organisms?

A

Autotroph and heterotrop

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3
Q

What mainly describe autotroph

A

Make their own food from inorganic material, are producers

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4
Q

what mainly describe heterotroph

A

feed on other organism

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5
Q

what are the 4 types of heterotroph

A

herbivore, carnivore, omnivores, saprobes

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6
Q

true of false, first life develop under anaerobic conditions

A

true

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7
Q

How where the first cells

A

chemoorganotrophic

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8
Q

from where the first cell got their energy

A

complex molecules formed in ocean

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9
Q

what are the 3 domains of life

A

Bacteria, Archaea, Eukaryotes

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10
Q

what is the difference between bacteria and archaea

A

bacteria have chlorophyll

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11
Q

what is the oldest oldest and most abundant organism on earth

A

prokaryotes

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12
Q

How in DNA in the prokaryotes

A

free in the cytoplasm

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13
Q

Does archaea need oxygen to survive

A

no they are mostly anaerobic

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14
Q

what is a methanogen

A

archaea, oldest organism on earth

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15
Q

What was in atmosphere when methanogen appeared

A

methane and ammonia

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16
Q

what is the habitat of methanogen

A

marsh, pond, intestinal tracts

17
Q

where thermophiles are found

A

hot spring

18
Q

under which temperature thermophiles dies

A

50 degree

19
Q

where halophiles are found

A

high concentration of water

20
Q

what are the specialized mechanism of halophiles

A

exclude water from cells

21
Q

to what can we compare the size of a cyanobacteria

A

chloroplast

22
Q

in which type of environment cyanobacteria are found

A

everywhere

23
Q

why are they not considered eukaryotes

A

no defined nucleus

24
Q

what is the function of cyanobacteria

A

convert carbon into calcium carbonate. deposits as limestone

25
Q

in cyanobacteria, into what nitrogen is fix

A

ammonia by nitrogenase

organism (7 decks)

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