Summarize two pathways to colon cancer
What will be an ideal response?
The first pathway to FAP colon cancer begins with a mutation in the APC gene. This mutation causes formation of large numbers of noncancerous polyps that slowly progress to cancer. The second pathway to HNPCC colon cancer begins with a mutation in a DNA repair gene. Polyps form slowly but mutations accumulate rapidly, making it almost certain that at least one polyp will progress to colon cancer.
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Plants exude ____ from roots to stimulate the growth of soil fungi
a. strigolactones b. cytokinins c. ethylene d. auxins e. jasmonates
Match the symbol on the left with its description on the right
A) y-intercept of a Lineweaver–Burk plot B) turnover number C) Michaelis–Menten constant D) maximum velocity E) substrate concentration F) slope of a Michaelis–Menten plot 1) Km 2) kcat 3) Vmax 4) [S] 5) Km/Vmax 6) 1/Vmax
A temporary oxygen deficit during strenuous exercise causes a muscle to
A) synthesize muscle proteins in response to steroid hormone stimulation. B) synthesize glycogen. C) ferment pyruvate to lactate. D) switch to aerobic glycolysis. E) synthesize more NAD+.
If yeast cells are incubated under anaerobic conditions, the pyruvate they produce is converted to lactate
__________________ Indicate whether the statement is true or false.