By Warren D Dolphin
This lab handbook is for a one or two-semester majors point basic biology lab and will be used with any majors-level basic biology textbook. The labs are investigative and ask scholars to exploit extra severe pondering and hands-on studying. the writer emphasizes investigative, quantitative, and comparative methods to learning the existence sciences.
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Extra resources for Biological Investigations: Form, Function, Diversity and Process
Example text
The waterexpulsion vesicle (or contractile vacuole) functions in this capacity (fig. 6). The osmotic regulation function of the water-expulsion vacuole can be observed on a microscope slide. The preparation is difficult and requires patience and careful observation. Determining How Materials Enter Cells 37 Dolphin: Biological Investigations: Form, Function, Diversity & Process, 6/e 4. 6 Photomicrograph of Paramecium caudatum showing one of its two water expulsion vesicles (WEV). In life, these collapse and fill in a regular cycle.
1. ” Now assay the inside and outside samples from the start and end for the presence of the compounds added at the beginning of the experiment. 1, using plus and minus symbols to indicate the presence or absence of material both before and after incubation. The following are specific, easy-to-perform indicator tests: Test for Chloride Ion Add a few drops of 1 M AgNO3 to one inside and one outside tube for both start and end samples. A milky white precipitate of AgCl indicates the presence of Cl–.
Longest Dimension in µm Cell # 1 2 3 4 5 6 7 8 9 10 Average length = _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ How is the extracellular matrix related to the function of connective tissues? 11 3. Cellular Structure Reflects Function Text © The McGraw−Hill Companies, 2002 Use your ocular micrometer to measure the size of the soma of a neuron. Add the dimensions to your drawing. Is a neuron larger, smaller, or the same size as fibroblast that you measured when you looked at connective tissue?