Red mites (chiggers) spread ________ among both humans and rodents
A) Borrelia recurrentis
B) Orientia tsutsugamushi
C) Rickettsia rickettsii
D) Ehrlichia chaffeensis
E) Rickettsia typhi
B
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The Southern blotting technique for transferring DNA from an agarose gel to a piece of nitrocellulose membrane is named for E. M. Southern, the person who developed the procedure.
Answer the following statement true (T) or false (F)
In Drosophila, the female is the heterogametic sex
Indicate whether the statement is true or false
Which one of the following is TRUE regarding fossils?
A) Fossils are more likely discovered under the sea than on land. B) Even though fossils from more than 200,000 different species have been found, the fossil record remains incomplete. C) Because organisms are primarily composed of soft tissue, it is more likely that soft tissue is fossilized than hard tissue. D) Once fossilization is complete, no further degradation of the fossil can occur. E) Because fossils are so old, it is not possible to determine their age.
Some students consume large amounts of coffee and so-called energy drinks to help them stay alert when studying. You notice that many who engage in this practice seem to do poorly on exams. Suppose you want to investigate the relationship between caffeine consumption and exam performance. Which of the following statements would be an appropriate hypothesis?
(a). Students who consume large amounts of caffeine while studying will have lower exam scores than those who consume less caffeine. (b). One should avoid consuming too much caffeine while studying. (c). Too much caffeine is harmful to your health. (d). Many students consume large amounts of caffeine while studying. (e). Caffeine increases alertness but also increases anxiety.