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24 Cards in this Set
- Front
- Back
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What is the goal of Science?
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to investigate and understand nature, and to use those explanations to make useful predictions.
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How does an observation of an object differ from an inference about it?
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Observations uses one or more of the senses to gather in formation and record it but an inference is a logical interpretation of the prior knowledge like testing samples.
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How does a hypothesis help scientists understand nature?
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By increasing their knowledge of the hypothesis that is tested, whether it is supported or refuted.
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Why is it advantageous for scientists to test only one variable at a time in an experiment?
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Because, if all the variables are changed at once, you can't tell which one is responsible for the observed results.
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Distinguish between a variable and a control.
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VARIABLE: factors that change, like equipment, material, temperature, light, time.
CONTROL: Keeping these variables the same. |
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What steps are involved in making a conclusion?
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1. Use data from experiment
2. Evaluate the hypthesis 3. Draw a conclusion |
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Describe the impact of Pasteur's work on the community:
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1)many discoveries of microorganism. 2)saved french wine industry from souring & silkworm disease. 3)showed microorganisms responsible for infectious diseases. 4) Proved living things come from living things
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What must happen for a hypthesis to become a theory?
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As a hypthesis is experimented by numerous investigations, it becomes a theory when supported by many scientists because of positive results.
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How are unicellular & multicellular organisms alike?
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All reproduce, grow, obtain & use energy, respond to their environment, evolve over time.
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How are unicellular & multicellular organisms different?
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Unicellar is one cell only, multicellar is many cells, 100's 1000's even millions or trillions of cells.
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At least how many different cell types does the human body consist of?
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85
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Give an example of changes that occur during lifecycle of multicellular organisms:
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Development: butterfly from cacoon, eggst to maggots to flies, etc.
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How can a group of data be more informative than a table of data?
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Graph of data can make a pattern much easier to recognize, understand and interpret.
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How can a cell culture be useful to biologists?
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Test cell responses under controlled conditions, study interactions between cells, select specific cells for further study.
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What does science study, what does it NOT study?
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Studies nature,
Not art, etc. |
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How does science reach far beyond the scientific world?
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They contribute information to discussions about 1)health & disease 2) relationship between people & other living things 3)public health & environment.
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Name some ways scientists contribute information regarding public health & environment:
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1) how to assure that antibiotics will be effective for a long time. 2)How should chemical wasted be disposed of? 3)Info about your genes, how much needs to be private. 4) How communities should produce electricilty.
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Scientiests contribute information to discussions within the community, are the questions that arise answered by scientists alone?
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No, the society and economy also contribute to such discussions.
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Do scientists make final decisions in our society?
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No., just recommendations
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How does biology touch your everyday life?
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1)help appreciate life, pets to dinosaurs. 2)Provide info of food, nutrition you need, 3)provide methods to sustain world food supply. 4)diagnose & treat medical problems 5)identifies environment factors that can threaten you, disposal wastes from human activities, etc.
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More than any other science, how does biology help us?
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Helps us to understand what affects the quality of our life.
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List 3 possible ways a hypothesis may arise:
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Prior knowledge
Logical inference Imaginative guesses |
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What is the difference between theory and hypthesis?
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Theory is a well tested explanation that unifies a broad range of observaiont and Hyptheses is a possible explanation for a set of observations or an answer (guess) to a scientific question.
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BIOLOGY CHAPTER 1
UNDERSTANDING KEY CONCEPTS |
HI THERE, GOOD LUCK ANDREW
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