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24 Cards in this Set

  • Front
  • Back
What is the goal of Science?
to investigate and understand nature, and to use those explanations to make useful predictions.
How does an observation of an object differ from an inference about it?
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.
How does a hypothesis help scientists understand nature?
By increasing their knowledge of the hypothesis that is tested, whether it is supported or refuted.
Why is it advantageous for scientists to test only one variable at a time in an experiment?
Because, if all the variables are changed at once, you can't tell which one is responsible for the observed results.
Distinguish between a variable and a control.
VARIABLE: factors that change, like equipment, material, temperature, light, time.
CONTROL: Keeping these variables the same.
What steps are involved in making a conclusion?
1. Use data from experiment
2. Evaluate the hypthesis
3. Draw a conclusion
Describe the impact of Pasteur's work on the community:
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
What must happen for a hypthesis to become a theory?
As a hypthesis is experimented by numerous investigations, it becomes a theory when supported by many scientists because of positive results.
How are unicellular & multicellular organisms alike?
All reproduce, grow, obtain & use energy, respond to their environment, evolve over time.
How are unicellular & multicellular organisms different?
Unicellar is one cell only, multicellar is many cells, 100's 1000's even millions or trillions of cells.
At least how many different cell types does the human body consist of?
Give an example of changes that occur during lifecycle of multicellular organisms:
Development: butterfly from cacoon, eggst to maggots to flies, etc.
How can a group of data be more informative than a table of data?
Graph of data can make a pattern much easier to recognize, understand and interpret.
How can a cell culture be useful to biologists?
Test cell responses under controlled conditions, study interactions between cells, select specific cells for further study.
What does science study, what does it NOT study?
Studies nature,
Not art, etc.
How does science reach far beyond the scientific world?
They contribute information to discussions about 1)health & disease 2) relationship between people & other living things 3)public health & environment.
Name some ways scientists contribute information regarding public health & environment:
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.
Scientiests contribute information to discussions within the community, are the questions that arise answered by scientists alone?
No, the society and economy also contribute to such discussions.
Do scientists make final decisions in our society?
No., just recommendations
How does biology touch your everyday life?
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.
More than any other science, how does biology help us?
Helps us to understand what affects the quality of our life.
List 3 possible ways a hypothesis may arise:
Prior knowledge
Logical inference
Imaginative guesses
What is the difference between theory and hypthesis?
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.