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Quiz Chapter 1
Cell Biology
| Question | Answer |
|---|---|
| Which of the following scientific discoveries is incorrectly matched with the scientist? | Embden and Meyerhoff - discovered enzymes |
| Which of the following is a type of cell? | hepatocyte |
| Which is NOT a fundamental concept in cell theory? | Within a cell, information flows from DNA to proteins |
| Melvin Calvin and his colleagues used which of the following to deduce the steps in the Calvin Cycle? | radioisotopes |
| Which field is primarily concerned with the flow of information (within cells and from cell to cell)? | genetics |
| The steps in the scientific method do not include: | proposing a model |
| Which of the following can ONLY be viewed by electron microscopy? | viruses |
| Nucleic acid hybridization allows a researcher to: | identify and isolate specific DNA or RNA molecules |
| Phase contrast and __________are two types of microscopy especially useful for examining living, unpigmented cells | Differential interference contrast microscopy |
| Microscopic cells were first described by _________, who, among other things, looked at _________. | van Leeuenhoek, pond water |
| Which is mismatched with its appropriate size range? | plant cell = 10-100 nm |
| Of the following cell structures, which is the only one that can be seen using a light microscope? | a bacterium |
| A scientific hypothesis is: | a testable explanation of a natural phenomenon |
| All organisms are composed of __________, the basic structural units of biology. | cells |
| All the following are true of fluorescence microscopy EXCEPT | Fluorescence microscope can only be used on fixed, stained cells |
| Which of the following describes a general process that uses centrifugation to isolate organelles? | subcellular fractionation |
| Which type of microscope is mismatched with its description? | brightfield - uses UV light to visualize objects |
| Cell organelles can be purified using | Density gradient centrifugation Equilibrium density centrifugation |
| 1 nm = ________ mm | 1/1,000,000 |
| The electron microscope has much better resolving power than the light microscope because: | the wavelength of the electron is much shorter that the wavelengths of visible light |
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mjs021
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