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Biology Lab Midterm StudyGuide

# Biology Lab Midterm StudyGuide - Biology Lab Midterm Labs...

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Biology Lab Midterm Labs 1-6 Laboratory 1 The metric system is the standard in science for units of measurement. The three basic units are the meter for length, the gram for mass, and the liter for volume. Prefix Fractional/Multi ple Decimal Exponential Kilo- 1,000/1 1000.0 10 3 None=basic unit (m, g, L) 1/1 1.0 10 Centi- 1/100 0.01 10 -2 Milli- 1/1,000 0.001 10 -3 Micro 1/1,000,000 0.000,001 10 -6 Nano 1/1,000,000,000 0.000,000,001 10 -9 The resolving power of the microscope is affected by the wavelength of energy used and the light gathering ability of the lens. Resolution is the ability to clearly see details of an object at a specific distance. Parts of the Microscope:

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Ocular- Part you look through. Objectives- Allows you to focus, close to the object. Stage- Holds slide. Condenser- Condenses light for the specimen. I ris Diaphragm- Controls amount of light. Coarse Adjustment- Fine Adjustment- Find focus quickly. Light- Source of illumination. Laboratory 2 The scientific method is the universally recognized protocol for conducting investigation in the sciences. The four major steps in the scientific method are defined by making an observation, forming hypotheses, conducting experiments, and analyzing results/drawing conclusions. The null hypothesis states that the groups being compared are not different from each other. Alternate hypothesis states that the samples are significantly different, and therefore their samples are not equivalent. The degrees of freedom is 2(n-1), where n=number of samples per data set. For most biological work, a p-value of 0.05 or less indicates a significant difference between the two sample means, and we would reject the null hypothesis. A p-value of greater
than 0.05 indicates that the difference between the sample means it is

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Biology Lab Midterm StudyGuide - Biology Lab Midterm Labs...

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