Chapter 1 Flashcards
Explain why science cannot answer every question.
Science is limited to the natural world.
What are two definitions of science?
And organized way of gathering/analyzing evidence about the natural world. A body of knowledge.
What are the goals of science?
To provide natural explanations for events in the natural world and to understand patterns to make predictions about future events.
What is the scientific method?
An organized way to solve a problem.
List the steps of the scientific method.
- State the problem
- Form a hypothesis
- Set up a controlled experiment
- Record results
- Analyze results
- Draw a conclusion
- Publish your results
How do you make an observation?
You gather information using your senses.
What is quantitative data?
That are based on numbers.
What is qualitative data?
Data based on observations and qualities.
What is a hypothesis?
An educated guess.
What is an independent variable?
The variable in an experiment that is being manipulated.
What is the dependent variable?
The variable that changes in result of the independent variable.
What is the group called that maintains normal conditions in an experiment?
The control group.
Why is it important to use a large sample size?
To avoid sources of error.
What are the only two things that your conclusion can state?
Whether or not your hypothesis was supported or disapproved.
Why is it important that your research is reviewed by peers?
So they can check for possible error
Briefly discuss the three scientists in the research that led to disproving spontaneous generation.
Francesco ready observed Magans would appear on trash. To test he took two jars of meat one was covered and 1 wasn’t. Was I was balancing he observed mold would grow in his soup after it was left out, for his experiment used to flasks of soup one was open and one was not. Louis past year he disapproved spontaneous generation by putting a flask out with soup with a curved nozzle this prevented any bacteria from getting into the soup, after a year he broke the nozzle off the flask and bacteria soon formed. He won an award for this experiment.
Why experiments not always an option
Field studies where you have to go outside and you can’t control the environment, ethical considerations where you wouldn’t do human testing, and individual bias where your opinion might come into effect
Distinguish between a hypothesis theory and law
This is an educated guess, a theory is when evidence from numerous experiments supports the hypothesis and a law describes an occurrence in nature that happens to always be true.
List the characteristics of life given example of each in humans
They are based on DNA, they grow and develop, they respond to their environment, they reproduce, they are able to maintain a stable internal environment, they obtain and use material and energy, they’re made up of cells, and they evolve
What are the levels of organization from largest to smallest
By his spirit which is the large portion of earths contain life, ecosystems which look at a specific environment and include all nonliving things in that environment, communities which looks at all living things in an environment area, population looks at a species in the area, organism which is one individual thing, organ systems which is a group of organs, organs which is one Organ, tissues which make organs,cells which make up tissues, molecules that make up cells, and Atoms the make up molecules
What are the big ideas or themes of biology
Cells are the basis of life Information and heredity Matter and energy Growth development and reproduction Homeostasis Evolution Structure and function Unity and diversity Interdependence Science as a way of knowing
What is the measurement system used in science
The international system of units
List the prefix is used in the metric system in their meaning
Kilo 1000, hecto 100, Deca 10, meters liters grams, Deci .1, centi .01, Milli .001
