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Biology > Unit 2 > Flashcards

Unit 2 Flashcards

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AP® Biology flashcards
1
Q

What are the two ways of classifying organisms?

A

Artificial system- based one 1/2 characteristics

Natural system- based on evolutionary relationships

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2
Q

What is a species?

A

A group off organisms that can produce fertile offspring

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3
Q

What does asexually mean?

A

Only needing one parent

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4
Q

What is a hybrid?

A

When two different species interbred producing infertile offspring

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5
Q

What does a pyramid of biomass show?

A

The dry mass of living materials

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6
Q

What does a pyramid of numbers show?

A

The feeding relationships in a food chain

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7
Q

How is energy transferred at different trophic levels?

A

Through:
Respiration
Egestion
Excretion

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8
Q

What happens in the Carbon cycle?

A

Carbon dioxide is removed from the air by photosynthesis in plants

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9
Q

(Carbon cycle) How is carbon dioxide released in the air?

A

Plants and animals respiring
Bacteria and fungi as decomposers
Fossil fuel burning

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10
Q

(Nitrogen cycle) What does nitrifying bacteria do?

A

Converts ammonia to nitrates

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11
Q

(Nitrogen cycle) What does denitrifying bacteria do?

A

Converts nitrates to nitrogen gas

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12
Q

(Nitrogen cycle) What does nitrogen fixing bacteria do?

A

Lives in root nodules fixing nitrogen gas

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13
Q

Whats a ecological niche?

A

Describes the habitat a organism lives in

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14
Q

Define interspecific

A

Between organisms of different species

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15
Q

Define intraspecific

A

Between organisms of the same species

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16
Q

Describe parasitism

A

Feed on or in another living organism

Only one person benefits

17
Q

Describe mutalisum

A

Mutual benefits for both organisms

18
Q

How does animals adapt to keeping warm?

A

Reducing heat loss with anatomical adaptations

They have excellent insulation

19
Q

What adaptation do penguins have that help keep then warm?

A

A counter current exchange system

Warm blood passing to the cold areas and cold blood passing to warm areas to warm up

20
Q

What is a biochemical adaptation of living in the cold?

A

Antifreeze proteins in cells

21
Q

What are the 7 classification groups?

A 
Kingdom
Phylum
Class
Order
Family
Genus 
Species

(Kinky prawns can only find gay sex)

Biology (3 decks)

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