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Honors Biology > Outcome B > Flashcards

Outcome B Flashcards

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0
Q

DNA

A

Genetic code that stores the complex information organisms need to live, grow, and reproduce

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1
Q

Biology

A

Study of life

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2
Q

Stimulus

A

Signal to which an organism responds

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3
Q

Sexual reproduction

A

Cells from two parents unite to form the first cell of a new organism

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4
Q

Asexual reproduction

A

A single organism produces off springs identical to itself

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5
Q

Homeostasis

A

When organisms keep their internal environment relatively stable

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6
Q

Metabolism

A

When chemical reactions through which an organism builds up or breaks down materials

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7
Q

Biosphere

A

The connection of all forms of life on Earth

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8
Q

Cells

A

Basic units of life

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9
Q

What is the cell theory?

A
  • all living organisms are made up of one or more cells
    • cells are the basic units of structure and function in living things
    • new cells are produced from existing cells
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10
Q

Cell membrane

A

A thin, flexible barrier of a cell

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11
Q

Nucleus

A

A large membrane-enclosed structure that contains genetic material and controls many of the cells activities

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12
Q

Eukaryotes

A

Cells that enclose their DNA in nuclei

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13
Q

Prokaryotes

A

Cells that do not enclose DNA in nuclei

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14
Q

Tissue

A

Group of similar cells that perform a particular function

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15
Q

Organ

A

Group of tissues that work together

16
Q

Organ system

A

Group of organs that work together to perform a particular function

17
Q

Receptor

A

Responds to chemical signals

18
Q

What are the characteristics of living things?

A
  • made up of cells
    • based on DNA
    • obtain and use materials and energy
    • grow and develop
    • reproduce
    • respond to the environment
    • homeostasis
    • evolve
19
Q

Electron Microscope

A
  • uses electron beams to focus and magnify a non-living image
    • better magnification
20
Q

Scanning Electron Microscope

A
  • magnifies up to 500,000 times

- can show things in 3D

21
Q

Transmission Electron Microscope

A
  • magnifies up to 1,000,000 times

- makes small, 2D pictures

22
Q

Compound Light Microscope

A
  • allows light to pas through the specimen
    • uses 2 lenses to form an image
    • limited by the nature of light

Honors Biology (5 decks)

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