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Biology > 1-20 > Flashcards

1-20 Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Hypothesis

A

The proposed scientific explanation for a set of observations.

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2
Q

Theory

A

Ideas that have been supported over time.

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3
Q

Dependent Variable

A

Observed factor that may change in response to the other variable.

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4
Q

Independent Variable

A

The factor that is purposely changed in an experiment.

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5
Q

Control Group

A

A group of subjects, closely resembling the experimental group but not receiving the factor under study, which serves as a comparison to the experimental group.

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6
Q

Experimental Group

A

A group of subjects which receive the factor under study.

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7
Q

Cell

A

The smallest unit of an organism considered to be alive.

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8
Q

Stimulus

A

Any physical or chemical input that is sensed.

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9
Q

Homeostasis

A

The process by which organisms keep their internal body conditions fairly constant to survive.

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10
Q

Evolution

A

A change in a kind of organism over time.

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11
Q

Atom

A

The basic unit of matter

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12
Q

Proton

A

The positively charged particle found in the nucleus of an atom.

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13
Q

Neutron

A

The particle with no charge found in the nucleus of an atom.

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14
Q

Electron

A

The negatively charged particle found in the nucleus of an atom.

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15
Q

Element

A

A pure substance that consists entirely of one type of atom.

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16
Q

Molecule

A

A group of atoms bonded together forming the smallest fundamental unit of a pure substance.

17
Q

Isotopes

A

Atoms of the same element with different numbers of neutrons.

18
Q

Chemical Bonding

A

An attraction between two or more atoms resulting in the formation of different chemical substances.

19
Q

Chemical Reaction

A

Changes in chemical substances involving bond breaking and/or bond forming resulting in different chemical substances.

20
Q

Ion

A

A positively or negatively charged atom.

Biology (9 decks)

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