Bio - Unit 1, Chapter 1 Flashcards

1
Q

Define biology

A

the study of life

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2
Q

Define organisms

A

living things

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3
Q

Define biosphere

A

the parts of the earth that sustain life

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4
Q

Define species

A

a group of organisms so similar to one another that they can interbreed and produce fertile offspring.

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5
Q

What 5 main areas of life in which Biology has an affect?

A

food, clothing, shelter, health, and fuel

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6
Q

7 characteristics common to all living things?

A

-made up of cells, reproduce, uses energy, grows, organized, responds to environment, evolve or change.

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7
Q

What are the levels of organization?

A

-atoms and molecules, cells, tissue, organ, organ system, population, community, and ecosystem.

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8
Q

Define atoms and molecules.

A

Make up cells and therefore life. (DNA)

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9
Q

Define cells

A

the smallest unit of life capable of carrying out all of the functions of living things. all organisms are made up of cells.

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10
Q

Define tissue

A

a group of cells that perform a specific function in an organism.

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11
Q

Define organ

A

several different types of tissues that function together to perform a specific function.

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12
Q

Define organ system.

A

made up of several organs who work together to perform a function.

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13
Q

Define population.

A

a group of organisms of the same species that live together in a particular location.

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14
Q

Define community.

A

all the populations of different kinds of organisms living in the same space.

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15
Q

Define ecosystem.

A

The community of organisms in an area, as well as the non-living factors of the environment.

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16
Q

What are the main causes of the greatest mass extinction?

A
  • human interference
  • pollution
  • climate change
17
Q

What can help preserve life on Earth?

A

A great understanding of species and their environments.

18
Q

What are our main energy sources?

A

fossil fuels such as oil, coal, and natural gas (non-renewable)

19
Q

Fossil fuels are the….

A

…remains of past plant life.

20
Q

What are some examples of renewable sources?

A

solar, wind, and water power.