Which of the following diseases is transmitted by mosquitoes?
A. influenza
B. septicemia
C. tuberculosis
D. malaria
E. diarrheal diseases
Answer: D
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Which of the following could be classified as a "transitional form" fossil?
A. Hyracotherium, the first fossil of a horse that was found 55 mya. B. An early amphibian tetrapod from 360 mya. C. A clam shell laying at the bottom of the ocean. D. A fossil that has all of the ancestors traits and none of the present day animals traits. E. A fossil that has some ancestoral traits and some traits that are found in present day animals.
The ecological role of nematodes includes: a. population management of diatoms
b. being a scavenger. c. being a key to benthic communities. d. being numerous.
What separates the strands of DNA in the polymerase chain reaction (PCR) technique?
A. Centrifuge B. Heat C. Restriction enzymes D. Helicase
During inhalation, ____
a. thoracic volume decreases b. the diaphragm contracts by flattening c. pressure in the alveoli doesn't change d. the ribs are moved downward e. atmospheric pressure falls