Cells may enter stationary phase because of ________.
A. the accumulation of toxic waste products
B. a lack of available oxygen
C. the depletion of an essential nutrient
D. All of the choices are correct.
Answer: D
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Which of the following is FALSE when comparing RNA and DNA?
A. Both are produced by phosphodiester linkages. B. Both are composed of phosphate groups. C. Both are composed of sugars. D. Both are composed of identical nucleotides. E. Both are composed of a phosphate group, a pentose sugar, and a nitrogenous base.
Which of the following organisms is used in
the genetic engineering of plants?
a. E. coli b. T. aquaticus c. A. tumefaciens d. P. flourescens e. B. thuringiensis
The first school of nursing was founded by
A. Robert Koch. B. Joseph Lister. C. Florence Nightingale. D. Ignaz Semmelweis. E. John Snow.
Which substance usually passes in the greatest amount through the placenta from the blood of the fetus to the blood of the mother?
A. oxygen B. carbon dioxide C. amino acids D. glucose