Chapter 1: Biology Flashcards Preview

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Flashcards in Chapter 1: Biology Deck (19):
1

Science

An organized way of gathering and analyzing evidence about the natural world.

2

Observation

The act of noticing and describing events or processes in a careful, orderly way

3

Inference

A logical interpretation based on what scientists already know.

4

Hypothesis

A scientific explanation for a set of observations that can be tested in ways that support or reject it.

5

Controlled experiment

An experiment where only one variable in changed and all others are controlled

6

Independent variable

The variable deliberately changed
Aka manipulated variable

7

Dependent variable

Variable that is observed and changes in response to the independent variable
Aka responding variable

8

Control group

Is exposed to the same conditions as the experimental group except for one independent variable.

9

Data

Detailed records of experimental observations

10

Theory

A well tested explanation that unifies a broad range of observations and hypotheses and that enables a scientist to make accurate predictions about a new situation.

11

Bias

A particular preference or point of views that is personal, rather than scientific

12

Biology

The study of life

13

DNA

The genetic code found in all organisms that stores the complex information needed to live, grow and reproduce

14

Stimulus

A signal to which an organism responds

15

Sexual reproduction

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

16

Asexual reproduction

A single organism produces offspring identical to itself

17

Homeostasis

An organisms' ability to keep stable internal conditions while external conditions change dramatically

18

Metabolism

The combination of chemical reactions through which an organism builds up or breaks down materials

19

Biosphere

Means "living planet" and all forms of life are linked to it