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10 Cards in this Set
- Front
- Back
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What are 3 advantages of using light microscopes?
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Advantages include:
-color imags instead of monocromatic -larger FOV -easily prepared sample material -possibility of examining living material and observing movement |
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Define organelle
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a discrete structure within a cell and has a specific function
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How large are molecules, thickness of membranes, viruses bacteria, organelles, and most cells? (using appropriate SI units)
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molecules= 1 nm
thickness of membranes= 10 nm viruses= 100 nm bacteria= 1 micrometer organelles- upto 10 micrometers most cells= upto 100 micrometers |
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Fill in the blank
All cells are formed from ___________ ___________. (2 words) |
other cells
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maginfication= size of _______ / size of ________
(Fill in the blank) |
maginfication= size of image / size of specimen
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Define tissue
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groups of cells that develop in th same way, with the same structure and function
(heart muscle is an example) |
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Define organ
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groups of tissues that have combinded to form a single structure. The tissues work together to perform an overall function (heart is an example)
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Define organ system
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groups of organs within an organism that together carry out a process (cardiovascular system is an example)
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Fill in the blank
Multicellular organisms __________ to carry out specialized functions by expressing some of their genes but not others. |
Differentiate
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Fill in the blanks
Viruses are ________________ structures consisting of Dna or RNA surrounded by a _________ coat |
non-cellular; protein
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