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biology > 2.1 Classification And Biodiversity > Flashcards

2.1 Classification And Biodiversity Flashcards

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1
Q

What are the 3 domains

A

Archaea, Eubacteria and Eukarya

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2
Q

Wjat is archaea

A

Bacteria living in hostile environments- extreme temps, ph, salinity or pressure with an unusual metabolism e.g producing methane

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3
Q

What is eubacteria

A

Common bacteria

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4
Q

What is Eukarya

A

Eukaryotes- plants, animal, fungi, protictists

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5
Q

What are the 5 kingdoms

A 
Plantae, 
Animalia 
Fungi
Prokaryotes 
Protoctista
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6
Q

What are protictists?

A

Unicellular eukaryotic microorganisms that do not form tissues- eg algae

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7
Q

What are kingdoms based on?

A

Physical characteristics

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8
Q

How are things sorted into phyla ?

A

Certain things in coming eg- chordates all have spinal cords

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9
Q

What is a class

A

Sun-group of a phylum eg mammals

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10
Q

What is a genus

A

Group of organisms with a large number of similarities- unable to interbreed successfully

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11
Q

Key features of plantae

A 
Multicellular 
Eukaryotic organisms
Photosynthesise (autotrophic) 
Reproduce using spores or seeds
Possess cellulose cell walls
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12
Q

What is Animalia

A

Multicellular heterotrophic,
Eukaryotic
Lack cell wall
Show nervous coordination

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13
Q

What are key features of fungi

A 
Are multicellular (moulds- body consists of network of threads called hyphae) or single called (yeast)
Eukaryotic

Chitin cell wall
Hetrophobic- either saprophytic or parasitic
Reproduce by production of spores or budding

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14
Q

What are key features of prokaryotes

A 
Microscopic, 
Unicellular 
Cell wall made of peptidoglycan(murein) 
Lacks membrane bound organelles 
70s ribosomes
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15
Q

What are key features of protoctista

A

Includes algae and slime moulds
Unicellular and resemble animal cells(amoeba)
Whilst others are Colonial and have plant like cells(spirogyra)

Contain membrane bound organelles and nucleus

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16
Q

What’s a domain

A

Contain organisms that share a distinctive unique pattern of ribosomal RNA which establishes their close evolutionary relationship

17
Q

What’s a species

A

Consists of a group of individuals with similar characteristics that can interbreed and produce fertile offspring

18
Q

What’s autotrophic nutrition

A

Making complex organic molecules from simple inorganic ones using either light or chemical energy

19
Q

What’s hetrophobic nutrition

A

Involves consumption of already made complex organic molecules

20
Q

What’s saprophytic nutrition

A

Involves feeding on dead or decaying matter by the production of enzymes extracellulary and the subsequent absorption of the products

21
Q

What’s parasitic nutrition

A

Involves obtaining nutrients from a host organism over a long period of time, causing it harm in the process

biology (5 decks)

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