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A protein has an apparent mass of 800 kD by gel filtration chromatography, but SDS-PAGE shows a single band at a position corresponding to 200 kD. In an ultracentrifuge, will the protein exhibit a sedimentation coefficient corresponding to 200 kD or 800 kD?
Clostridium and Streptococcus are both catalase-negative. Streptococcus grows by fermentation. Why is Clostridium killed by oxygen, whereas Streptococcus is not.
Which process occurs as a result of an excess of CO2 in the blood? Why? Write the chemical reaction showing how the bicarbonate buffering system can help buffer against a change in pH.
A microbiologist must culture a patient 's feces for in testinal (enteric) pathogens. Which of the following meida would he likely use. What is the purpose of resazurin in reducing media.
An SDS-PAGE gel is run of proinsulin and insulin.Samples were treated with beta-mercaptoethanol prior to electrophoresis.Draw a picture of the predicted results.
IgM is the first antibody at initially has higher rate during the primary antibody response, why is membrane filter technique useful for a sanitarian working in the filed?
A certain instant camera determines the distance to subject by sending out a sound wave and measuring the time required for the wave echo to return to the camera. How long could it take the sound wave to return to the camera if the subject were 2.68 ..
Examine the nature of water and how its unique chemical properties impact water regulations in plants. Elucidate the structure and function of the leaf to water regulation.
Primary transcripts produced by RNA polymerases are generally faithful copies of the DNA template. However, most final/functional forms of these RNAs vary substantially from the primary transcript.Give an instance of an RNA class.
Which characteristic of water allows fish to survive under the polar ice caps?
Explain two reasons why kidney failure can affect calcium homeostasis. List 2 things that can help to increase bone formation in the elderly.
Non-competitive inhibitors of enzymes change the slope and Km of the Lineweaver Burk graph compared to no inhibitor.
Discuss the differences between a gymnosperm's secondary growth and an angiosperm's secondary growth? how could you tell the stems apart?
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