What actually happens when pyruvic acid loses a carbon dioxide molecule after glycolysis?
A) The pyruvic acid is denatured.
B) The pyruvic acid is phosphorylated.
C) The pyruvic acid is decarboxylated.
D) The pyruvic acid is oxidated.
C
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Approximately what percentage of hospitalized patients may develop a nosocomial infection?
A. 0% B. 5% C. 20% D. 70%
What charge will the hydrogen have in a water molecule?
a. Strongly negative b. Slightly negative c. Neutral d. Slightly positive e. Strongly positive
Which of the following is NOT an innate body defense?
a) complement b) the skin and mucous membranes c) antibodies d) lysozyme
You have isolated a piece of DNA that you believe contains an interesting gene. Using a mix of RNA polymerase and ribonucleotides, you perform in vitro transcription
However, even though all of your controls work, no mRNA is created from your DNA fragment. Working backward, you note that your DNA preparation removed approximately 250 base pairs from the 5' end of the gene. The most likely explanation is that during DNA preparation A) the termination signal was removed. B) the RNA polymerase became inactivated. C) the 5' methyl guanosine cap was removed. D) the promoter was removed. E) None of these explains the negative results.