why would an enlarged prostate interfere with urination
What will be an ideal response?
it compresses the urethra
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The genetic material of prokaryotes is
a. RNA. b. linear. c. circular. d. single-stranded DNA. e. protected within a double-membrane structure.
You are interested in the mobility of two different unknown integral plasma membrane proteins—protein X and protein Y—in a cell. In one cell, you fluorescently label all the X proteins
In another cell, you label all the Y proteins. When you perform FRAP analysis on both cells, you find that most of the protein X fluorescence has recovered within 3 minutes, but recovery of the protein Y fluorescence is significantly slower. Even after 10 minutes, only 50% of the protein Y fluorescence has recovered. Describe the FRAP experimental protocol, explain what the results tell you about mobility of the X and Y proteins, and propose a possible explanation for why the mobilities of the two proteins differ. What will be an ideal response?
Enzymes are catalysts because they function to:
A. supply the reactants B. supply activation energy C. raise activation energy D. lower activation energy
You discover a new fluorescent protein that emits photons with a wavelength of 600 nm. Which of the following wavelengths of light might excite the protein?
A) 455 nm B) 590 nm C) 550 nm D) all of the above