Biology lab quiz 1 (unit 1,2, and 3)

Ph+buffers, metric system, and scientific method

observations

Notice a pattern, event, or problem in the natural world,1

Background research

Review our current understanding of the observation.helps to indentify variables ,2

Question

Ask a clear, testable question about the observation, 3

Hypothesis

propose a possible explanation that can be tested. 4

predictions

state what could happen if the hypothesis is supported, 5

experiment

decide and carry out a controlled test, include independent and dependent variables, 6

Data collection

record measurable results carefully and accurately,7

Analysis

organize and interpret the data to indentify patterns or trends.8

Conclusion

decide whether the data supports or rejects the hypothesis, 9

Communication

share results so others can review, repeat, or build on the experiment, 10

most to least accurate volume methods

pippettes, graduated cilinder, e.flask, breakers

Carbohydarates

monosaccharides, disaccharides, polysaccharides

Lipids

Glyerol and fatty acids

proteins

amino acids

Nucleic acids

nucleotides

independent variable

variable that is controlled by scientists

dependent variable

factor measured in response to ind. variable

alternative hypothesis

the hypothesis makes a difference, shows new information

null hypothesis

hypothesis does not make a difference, shows no new information