The basic differences between RNA and DNA reside in their sugar and pyrimidine bases; RNA has ribose and uracil whereas DNA has deoxyribose and thymine.
Answer the following statement true (T) or false (F)
True
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Which of the following is the strongest evidence that cytokinins regulate cell divisions? There is _____
A) an increase of cyclin gene expression in tissues exposed to cytokinin B) a decrease of cyclin gene expression in tissues exposed to cytokinin C) an induction of shoot growths in tissues exposed to cytokinin D) an induction of root growths in tissues exposed to cytokinin E) an ability of cytokinin to interact with auxin at the molecular level and change auxin biosynthesis and transport
Which two systems in the human body are devoted exclusively to the regulation of organ function?
A. endocrine and circulatory systems B. respiratory and circulatory systems C. nervous and circulatory systems D. nervous and endocrine systems E. respiratory and nervous systems
In yeast, posttranslational translocation of proteins targeting the ER is
a. a process affecting many newly synthesized proteins. b. much less common than in mammalian cells. c. rare. d. impossible, because all translocation into the ER is driven by the process of protein synthesis.
The hanging drop preparation is useful when observing biochemical reactions
a. true b. false