Chapter 1 Vocabulary

Front 1

science

Back 1

organized way of using evidence to learn about the natural world; also

Front 2

observation

Back 2

use of one or more of the senses-sight

Front 3

data

Back 3

evidence; information gathered from observation

Front 4

inference

Back 4

logical interpretation based on prior knowledge and experience

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hypothesis

Back 5

possible explanation for a set of observations or possible answer to a scientific question

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spontaneous generation

Back 6

hypothesis (disproven) stating that life could arise from non-living matter.

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controlled experiment

Back 7

a test of the effect of a single variable by changing it while keeping all other variables the same

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manipulated variable

Back 8

factor in an experiment that a scientist purposely changes; also knows as independent variable.

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responding variable

Back 9

factor is an experiment that a scientist wants to observe

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theory

Back 10

well-tested explanation that unifies a broad range of observations.

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Biology

Back 11

Science that seek to understand the living world.

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Cell

Back 12

Collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life.

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Homeostasis

Back 13

Process by which organisms maintain a relatively stable internal environment.

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Sexual reproduction

Back 14

Process by which cells from two different parents unite to produce the first cell of a new organism

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Asexual reproduction

Back 15

Process by which a single parent reproduces by it self

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Metabolism

Back 16

Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes.

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Stimulus

Back 17

A signal to which an organism responds.

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Metric system

Back 18

decimal system of measurement based on certain physical standards and scaled on multiples of 10

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Microscope

Back 19

Device that produces magnified images of structures that are too small to see with the unaided eye.

Front 20

Compound light microscope

Back 20

Microscope that allows light to pass through a specimen and uses two lenses to form an image.

Front 21

Electron microscope

Back 21

Microscope that forms an image by focusing beams of electrons onto a specimen.

Front 22

Cell culture

Back 22

group of cells grown in a nutrient solution from a single original all.

Front 23

Cell fractionation

Back 23

Technique in which cells are broken into pieces and the different cell part are separate