During transcription, free nucleotides of RNA bond with ____ nucleotides.
A. DNA
B. other tRNA
C. mRNA
D. rRNA
A. DNA
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Arthrosclerosis is a condition that results in a thickening of arterial walls due to buildup of fatty deposits containing
A) glycerol. B) albumin. C) phospholipids. D) glucose. E) cholesterol.
In 1944, Avery, MacLeod, and McCartney performed transformation experiments using live, harmless bacteria and extracts from virulent bacteria treated with various enzymes. Which of the following were used and why?
A) Proteases and RNases to rule out protein and RNA as the transforming factors. B) Lipase to rule out lipoproteins as the transforming factor. C) Kinase to show that transformation is phosphorylation dependent. D) ATPase to show that transformation is not dependent on ATP.
The evolution of saber teeth in a number of groups of extinct carnivorous mammals is an example of
A. homoplasy caused by common descent. B. homoplasy caused by convergence. C. homology caused by common descent. D. homoplasy caused by evolutionary reversal. E. homology caused by convergence.
True or False: Since 1817, cholera has swept the world in 14 major pandemics
a. TRUE b. FALSE