Leaks between adjoining cells are stopped by rows of proteins most specifically defined as ________ junctions
a. tight
b. cell
c. gap
d. adhering
a
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The best way to prevent desertification is to avoid farming in areas subject to ____
a. flooding b. deforestation c. acid rain d. high winds and periodic drought e. topsoil buildup
Robert Koch was involved in research on all of the following topics EXCEPT
A) the cause of anthrax. B) the cause of fermentation. C) development of a method to determine the cause of an infectious disease. D) the cause of tuberculosis. E) techniques for isolating microbes in the laboratory.
Cholera toxin causes intestinal cells to secrete large amounts of electrolytes, resulting in a very watery diarrhea
Indicate whether the statement is true or false
Prenatal testing in the second trimester is conducted for the purpose of collecting mitotic cells in order to prepare a karyotype. Which mitotic phase is the preferred phase to analyze?
a. metaphase b. prophase c. anaphase d. telophase