Chapter 1 Vocab Flashcards

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1
Q

Observation

A

The process of gathering information about events or processes in a careful, orderly way

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2
Q

Data

A

Information gathered from the observation

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3
Q

Inference

A

A logical interpretation based on prior knowledge or experience

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4
Q

Hypothesis

A

A proposed scientific explanation for a set of observations

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5
Q

Spontaneous generation

A

Living organisms can be created anywhere at anytime, even from nonliving matter

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6
Q

Manipulated variable

A

Variable that is deliberately changed

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7
Q

Controlled experiment

A

Only one variable is changed, all others kept the same

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8
Q

Responding variable

A

Variable that is observed and that changes in response to the manipulated variable

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9
Q

Biology

A

Science that seeks to understand the living world

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10
Q

Cell

A

Collection of living matter enclosed by a barrier that separates the cell from its surroundings

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11
Q

Sexual reproduction

A

Two cells from different parent cells untie to produce the first cell of the new organism

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12
Q

Asexual reproduction

A

A new organism has a Single parent; divides to form two organisms

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13
Q

Metabolism

A

Combination of Chemical reactions to build up and break down materials as it carries out its life processes

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14
Q

Stimulus

A

Signal to which an organism responds

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15
Q

External stimuli

A

Stimuli coming from the environment

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16
Q

Internal stimuli

A

Comes from within the organism

17
Q

Evolution

A

Group of organism change over time

18
Q

Microscopes

A

Devices that produce magnified images of structures that are too small to see with the unaided eye

19
Q

Compound light microscopes

A

Allow light to pass through the specimen and use two lenses to form an image

20
Q

Electron microscopes

A

Use beams of electrons rather than light to produce images

21
Q

Cell culture

A

A group of cells develops from a single original cell

22
Q

Cell fractionation

A

Separate different parts of the cell

  1. Cells broken into pieces in a special blender
  2. Broken cell bits added to liquid and paced in a tube
  3. Tube inserted into centrifuge which spins up to 20,000 times a minute
  4. Spinning separates cells
23
Q

Science

A

An organized way of using evidence to learn about the natural world; also refers to the body of knowledge that scientists have built up after years of using this process

24
Q

Homeostasis

A

Keeping internal conditions stable