Chapter 1 Introduction to Life
Biology - study of ______________________.
I. Characteristics of life
All life has:
1. Order - all life has a _________________ organization.
2. Reproduction - the formation of new ________________, new generations.
Viruses cannot reproduce without a host, so officially they are ________________ alive.
3. Growth and development - we can grow ___________, we can grow out, or we can just grow replacement
cells.
4. Responsiveness - organisms respond to what they _______________, what they see, what they feel, what
they eat.
5. Energy utilization - take in _________________ and transform it into working parts; cellular respiration.
6. DNA - deoxyribonucleic acid; hereditary information on how to make _______________ protein the body will
ever need.
Gene - a piece of _______________ that has information for a particular protein.
II. Scientific Method
1. Make an observation
2. Form a Hypothesis - a testable explanation for _____________ experiences.
3. Conduct an Experiment - a ____________ to prove or disprove your hypothesis.
4. Collect Data - the _____________ of the experiment.
5. Conclusion - what it means. Prove or disprove your hypothesis
Example:
Important parts of an experiment
Control group - normal group; everything stays the ____________; placebo. Example:
Experimental group - change only _____________ variable. Example:
Placebo - inactive treatment; _____________ pill.
III. Levels of Organization
Chemical - basically atoms like _____________, oxygen, and so on that combine to form molecules.
_______________ - bunch of molecules get together.
Tissue - group of ___________ work together to do a particular function; epithelial, muscle, connective, and
nervous tissues.
Organ - several ______________ get together. Example:
Organ system - several _______________ working together. Example:
Organism - several ________________________ together.
Species - a ______________ of similar, potentially interbreeding organisms. Example:
Population - a group of individuals of one species living in the same _____________. Example:
Community - __________________ of several different species living in the same area.
Ecosystem - living and _______________ things interacting together in the same area.
Biosphere - the _______________ of all the ecosystems.
Last Updated: 1/16/2008
Biology - study of ______________________.
I. Characteristics of life
All life has:
1. Order - all life has a _________________ organization.
2. Reproduction - the formation of new ________________, new generations.
Viruses cannot reproduce without a host, so officially they are ________________ alive.
3. Growth and development - we can grow ___________, we can grow out, or we can just grow replacement
cells.
4. Responsiveness - organisms respond to what they _______________, what they see, what they feel, what
they eat.
5. Energy utilization - take in _________________ and transform it into working parts; cellular respiration.
6. DNA - deoxyribonucleic acid; hereditary information on how to make _______________ protein the body will
ever need.
Gene - a piece of _______________ that has information for a particular protein.
II. Scientific Method
1. Make an observation
2. Form a Hypothesis - a testable explanation for _____________ experiences.
3. Conduct an Experiment - a ____________ to prove or disprove your hypothesis.
4. Collect Data - the _____________ of the experiment.
5. Conclusion - what it means. Prove or disprove your hypothesis
Example:
Important parts of an experiment
Control group - normal group; everything stays the ____________; placebo. Example:
Experimental group - change only _____________ variable. Example:
Placebo - inactive treatment; _____________ pill.
III. Levels of Organization
Chemical - basically atoms like _____________, oxygen, and so on that combine to form molecules.
_______________ - bunch of molecules get together.
Tissue - group of ___________ work together to do a particular function; epithelial, muscle, connective, and
nervous tissues.
Organ - several ______________ get together. Example:
Organ system - several _______________ working together. Example:
Organism - several ________________________ together.
Species - a ______________ of similar, potentially interbreeding organisms. Example:
Population - a group of individuals of one species living in the same _____________. Example:
Community - __________________ of several different species living in the same area.
Ecosystem - living and _______________ things interacting together in the same area.
Biosphere - the _______________ of all the ecosystems.
Last Updated: 1/16/2008
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