If the sequence of bases in mRNA is U, C, A, the sequence of bases in DNA is
A. A, G, and U.
B. A, G, and T.
C. A, C, and A.
D. T, G, and U.
B. A, G, and T.
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Analysis of human chromosome 2 reveals that it was produced by the ____ that are still present in our closest
ancestral ape relatives.
a. fusion of many larger chromosomes b. fusion of two smaller chromosomes c. inversion of several centromeres d. reversal of centromere locations e. division of one larger chromosome
Which of the following statements about monocots is true?
a. They lack sclerenchyma tissue. b. They have a well-developed vascular cambium. c. They do not produce bark. d. Their lateral meristems give rise to wood. e. Secondary growth occurs rather slowly.
Which of the following describes a major component of the Staphylococcus aureus cell wall. It binds to the 'Fe' moiety (stem of the Y-shaped antibody) o rIgG, exerting an antiopsonin (and therefore strongly antiphagocytic) effect?
A. capsule B. protein A C. cytolytic exotoxins D. superantigen exotoxins E. DNAse enzymes
A decrease in blood glucose from skipping a meal will cause the ____ to secrete glucagon, which will cause the ____ to break down glycogen into glucose.
A. liver; pancreas B. pancreas; gall bladder C. spleen; pancreas D. pancreas; spleen E. pancreas; liver