Mrs. Rudiger's Biology Chp. 1 Melissa Holmes

43 terms by mjholmes15

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Biology

The study of life.

Research diseases, develop technologies, and preserve the environment.

What do Biologists do?

Organism

Anything that has all the characteristics of life.

1)Made of one or more cells 2.Displays organization 3.Grows and Develops 4.Reproduces 5.Responds to stimuli 6. Requires energy 7.Maintains homeostasis 8. Adaptions evolve over time.

8 characteristics of organisms.

Homeostasis

Regulation of an organism's interval condition to maintain life.

Organization

Arranged in an orderly way

Tissues

Specialized cells are organized into groups that work together called _____.

Organs

Tissues are organized into ______.

Organism

Organ systems work together to support an ______.

Growth

Addition of mass to an organism & the formation of new cells & structures.

Development

All of the changes that take place during the life of an organism.

Reproduction

_______ isn't essential for survival of an individual, but is essential for the continuation of the species.

Species

Group of organisms that can breed w/ one another & produce fertile offspring.

Stimulus

Anything that is part of the internal or external environments and causes a reaction by the organism.

Response

Reaction to a stimulus

Food.

Living things get their energy from _____.

Adaptation.

Any inherited characteristic that results from changes to a species over time.

Science

Body of knowledge based on the study of nature.

Peer review

Scientists undergo _____ before their experiments are made public.

Peer review

Process by which the procedures and results of an experiment are evaluated by other scientists in the same field.

Theory.

An explanation of a natural phenomenon supported by many observations & experiments over time.

Scientific Law

Describes relationship under certain conditions in nature, but doesn't explain why the relationship is the way it is. They never change.

Ethical

_____ issues must be addressed by society based on the values we hold important.

Ethics

Morals & values held by humans.

1) Ask a question 2. Form a hypothesis 3. Conduct an experiment to get data 4. Analyze Data 5. Report conclusions

5 Methods of Science

Hypothesis

Testable explanation of the situation

Control group

A group used for comparison in an experiment.

Experimental group

A group exposed to the factor being tested.

Ind. Variable

Only one factor in a controlled experiment can change @ a time; Factor being tested

Dep. Variable

Results from or depends on changes to the ind. variable.

Data

Info. gained from observations

Quantitative

________ data can be measured by time, length, temp, mass, area, volume, and density. (numerical)

Qualitative

________ data are descriptions of what our senses detects.

Metric System

Uses units w/ divisions that are powers of 10

Meter

S.I. Unit of length

Gram

S.I. Unit of mass

Liter

S.I. Unit of Volume

Seconds

S.I. Unit of time

Application

New use to which results are put or new technique updated.

1,000 and K

Kilo

.1 and D

Deci

.01 and C

Centi

.001 and M

Milli

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