The domination of the flowering plants over
the past 100 million years appear to be their
coevolution with
a. dinosaurs.
b. gymnosperms.
c. insects.
d. mammals.
e. humans
C
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Which of the following is true about molecular methods of microorganism detection in foods?
A. They can be used to detect the presence of a single specific pathogen. B. They can be used to detect slow-growing pathogens. C. They can be used to detect viruses that are not easily cultured. D. All of the choices are correct.
In the Hershey and Chase experiment, how did labeling DNA and protein with different radioactive isotopes demonstrate that DNA, rather than protein, carried the genetic information in the T2 virus?
A. Researchers could better elucidate DNA or protein structure. B. Researchers could use radio labeling to inactivate DNA and protein in the bacteria. C. Researchers could track which part of the virus entered a bacterial cell. D. Researchers could monitor how DNA interacted with protein in the virus. E. Researchers could distinguish bacterial DNA from viral protein.
Bacteria called Mycoplasma lack a cell wall. Their cell membrane is stabilized by ____________ and is resistant to lysis.
A) testosterone B) sterols C) teichoic acid D) porin
An outbreak of viral gastroenteritis occurs in a pediatrics ward. Rotavirus is the most likely causative agent
Indicate whether the statement is true or false