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.
B
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Blood agar is an example of a(n) ________ medium
A) selective B) general-purpose C) enrichment D) differential
Which of the following statements regarding helminths causing intestinal distress plus migratory symptoms is incorrect?
A. Praziquantel is the best treatment option for infection with these helminths. B. Nearly all newborn puppies in the U.S. are infected with Toxocara species. C. Tissues along the migratory route of the helminth experience inflammation. D. All of these infections are associated with eosinophilia, which can be detected in a complete blood count.
When a dorsal lip from a newt is attached to the ventral side of another embryo, it results in
a. two separate newts. b. two attached newts. c. survival of only the original newt. d. death of the newt. e. no observable result.
The removal or destruction of all living organisms is called
a) sterilization. b) disinfection. c) pasteurization. d) sanitization.