Compared to adding heat to the system, what is the advantage of using an enzyme to overcome an energy barrier?
A.) an enzyme generates multiple different products using multiple pathways
B.) an enzyme speeds up an reaction more than heat does
C.) an enzyme is specific for one desired pathway and end product
D.) an enzyme can catalyze a reaction in many different ways
Ans: C.) an enzyme is specific for one desired pathway and end product
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Which of the following does not contribute significantly to DNA damage?
A. deamination due to hydrolysis B. alkylation of bases C. deamination due to superoxide radicals D. oxidation by hydroxyl radicals E. oxidation by hydrogen peroxide (H2O2)
Which of the following molecule(s) exhibits self-splicing?
A. rRNA B. tRNA C. mRNA D. rRNA and tRNA E. rRNA and mRNA
What are the branched extensions of a neuron that receive signals called?
A. axons B. cell bodies C. dendrites D. oligodendrocytes E. synapses
You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new sweatshirt style. This is an example of a(n)
A) experimental question. B) type of observation. C) hypothesis. D) experiment.