Membership in a clade cannot be established by shared ancestral traits alone
_____________________ Indicate whether the statement is true or false.
T
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Why is it useful to know the structure of a ribozyme when trying to understand a particular ribozyme's
function?
a. The way the RNA folds determines the activity of the ribozyme. We need to understand the structure in order to measure the rate of the reaction. b. It is not very useful at all; it is just a matter of curiosity. c. We need to know the structure in order to develop drugs that destroy that structure and prevent HIV infection. d. We need to be able to determine if an RNA molecule is a ribozyme or not. The only way to do that is to determine the structure. e. The way the RNA folds relates to the function of the ribozyme. If we can figure out the relationship, we might be able to develop new ribozymes that act as therapeutic agents.
The most complete scientific picture of the oceans comes from:
a. thorough oceanographic studies. b. thorough marine biology studies. c. combining oceanography and marine biology information. d. having ocean usage policies. e. the popular media.
Which condition is a major concern for IV drug users?
a. endocarditis b. tachycardia c. myocarditis d. “blue babies” e. rheumatic fever
What is the likelihood that a patient infected by West Nile virus will develop West Nile encephalitis?
A. Greater than 20% B. Between 1% and 10% C. Greater than 50% D. Between 10% and 15% E. Less than 1%