Chapter 1 Science Words Flashcards

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1
Q

Autotrophs

A

Capture light energy from sunlight and convert it to chemical food energy

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2
Q

Heterotrophs:

A

Must get energy by eating autotrophs or heterotrophs

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3
Q

Decomposers

A

recycle dead organisms by breaking them down

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4
Q

Scientific Methods

A

A series of procedures for organization

d functions.

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5
Q

Hypothesis

A

A prediction that can be tested

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6
Q

Control

A

The standard to which the outcome of a test is compared

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7
Q

Variable

A

Something in an experiment that can change

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8
Q

Theory

A

An explanation of things or events based on scientific knowledge that is the result of many past experiments

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9
Q

Law

A

A statement of how things work in nature that seems to be true all the time

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10
Q

Spontaneous Generation

A

The idea that living things could come from Non-living things

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11
Q

Organism

A

Any living thing

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12
Q

Cell

A

The smallest unit of an organism that carries out the functions of life

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13
Q

Homeostasis

A

An organism’s ability to keep the proper conditions inside no matter what is going on outside the organism

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14
Q

Experiment

A

using controlled condition to test a prediction

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15
Q

Raw materials

A

Substances needed by organisms to make other necessary substances

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16
Q

Contaminate

A

To make impure by coming into contact with an unwanted substance

17
Q

Biogenesis

A

The theory that living things only came from other things

18
Q

Common Name

A

A non-scientific term that may vary from region to region

19
Q

Phylogeny

A

The evolutionary history of an organism or how it has changed over time

20
Q

Kingdom

A

1st and largest category

21
Q

Binomial Nomenclature

A

Two-name naming system that gives all organisms their scientific name

22
Q

Taxonomy

A

• Taxonomy: concerned with classification in ordered categories

23
Q

Phylogenetic Tree

A

• Phylogenetic Tree: A tree like chart showing the evolutionary relationships among various biologic species

24
Q

A clade

A

A group of organisms that include an ancestor and all descendants of it

25
Q

Dichotomous Key

A

A tool that allows the user to determine the identity of items in the natural world.

26
Q

Classification

A

Grouping of living organisms according to similar structures and functions.