Characteristics of life
Scientific method
Science
Scientific method cont...
Leftovers
100
What is a cell?
The basic unit of life.
100
What is the first step of the scientific method?
Form a hypothesis.
100
Define science
body of knowledge based on the study of nature
100
What is the scientific method?
method of observing and inferring.
100
What is biology?
The study of living and once-living things. The science of life.
200
What is the point of reproduction?
To pass traits to offspring.
200
To test a hypothesis what must a scientist do?
Perform an experiment.
200
What is the name of the system of measurement that scientists use?
Metric system
200
Do scientists just work in laboratories?
No they can also do field work.
200
Give an example of an organism's response to stimuli.
varied.
300
Reactions to internal and external stimuli are called what?
Responses
300
What are the names and definitions of the two groups included in an experiment?
Control group - is not exposed to what is being tested. Experimental group - IS exposed to what is being tested.
300
What is a pseudoscience and give some examples.
Little or no research that imitates science. phrenology astrology horoscopes
300
Does an experiment need to be re-testable?
Yes
300
What is an inference?
A guess based on observation
400
Humans perspiring to keep their body temp from rising too high is an example of what?
Homeostasis
400
What is the difference between an independent and a dependent variable?
Independent - tested factor that could change the results of the experiment Dependent - changes based on the independent variable
400
Why do scientists welcome debate over their topics of research?
To challenge known theories and find new scientific knowledge.
400
What do you do if your hypothesis is not supported?
Rethink the hypothesis and retest.
400
What are the levels of organization from smallest to largest?
cell - tissue - organ - organ system - organism
500
Name 5 characteristics of life
All living things are made of cells All living things display organization All living things are homeostatic All living things reproduce All living things grow and develop All living things require energy All living things adapt over time All living things respond to stimuli
500
What is the difference between quantitative data and qualitative data?
Quantitative - based on measurements Qualitative - not based on measurements
500
Why is peer review important?
Gives scientists an unbiased opinion about their research. Keeps scientists honest.
500
What is serendipity?
When scientists get good but unexpected results.
500
Name 5 ways biologists help humans?
Study the diversity of life Research diseases Develop technologies Improve agriculture Preserve the environment
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