Which nitrogenous waste has the greatest number of nitrogen atoms?
A) ammonia
B) ammonium ions
C) urea
D) uric acid
D
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In presenting data that result from an experiment, a group of students show that most of their measurements fall on a straight diagonal line on their graph. However, two of their data points are "outliers"
and fall far to one side of the expected relationship. What should they do? A) Do not show these points because clearly something went wrong in the experiment. B) Average several trials, rule out the improbable results, and do not show them in the final work. C) Show all results obtained and then try to explore the reason(s) for these outliers. D) Do not report this set of data and do the research again. E) Change the details of the experiment until they can obtain the expected results.
The process by which specific body tissues and organs form is ____
a. morphogenesis b. cleavage c. fertilization d. gastrulation e. gamete formation
Which model of evolution is closest to what was originally suggested by Charles Darwin?
A) Punctuated equilibrium model B) Graduated model C) Neither the punctuated equilibrium model nor the graduated model D) Both the punctuated equilibrium model and the graduated model
Answer the following questions true (T) or false (F)
1. If an Rh-positive woman marries an Rh-negative man, their children are at risk for hemolytic disease of the newborn. 2. Infection with certain viruses may lead to the development of type I diabetes. 3. Depletion of the helper T cell population by HIV results in the development of AIDS.