Nature of Biology Questions

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Chapter One Quick Check:
1.Cells were not discovered by Hippocrates because he didn’t have the technology and equipment to. 2.Robert Hooke is credited with the discovery of the basic building block of living organisms. 3.Robert Brown is credited with the discovery of the cell nucleus. 4.Schleiden and Schwann’s contribution to biology was proposing that cells are the basic structural unit for plants and animals. 5.Before Virchow, one idea was that living things could arise from non-living and from dead matter, a process called ‘spontaneous generation’. 6. Person B is more likely to have permanent damage, because mature brain cells are unable to reproduce, the loss of brain cells is likely to have a bigger impact on some function(s) of the individual. 7.There are one thousand micrometres in a millimetre.

8.If you had a choice of any kind of light microscope, identify, giving a reason, the most appropriate one for viewing the following: a.A living Amoeba
i.A phase contrast microscope.
b.A section of stained plant tissue
i.A high-standard light microscope.
c.The transfer of nucleus from one cell into another.
i.A differential interference contrast microscope.
9.True or false? Brief explanation.
a.All kinds of light microscopes use visible light to illuminate objects i.False: Some are developed to use ultraviolet and laser light b.If the objective lens of a light microscope has a 5× magnification and its ocular lens is 10×, then the magnification obtained of an object being viewed is 15×. i.False: The final magnification obtained is the product of the magnifications of each of the lenses multiplied together. c.The use of an oil immersion lens increases the magnification capability of a microscope. i.True: Oil immersion reduces refraction.

10.If you had a choice of any kind of electron microscope, identify, giving a reason, the most appropriate one for viewing the following: a.The surface of a layer of cells
i.Scanning...
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