Which animals have a gut with two openings, a mouth, and an anus?
a. cnidarians
b. annelids
c. flatworms
d. sponges
e. tapeworms
b
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A large reserve of methane is found in a pocket below the ocean floor and isotope analysis revealed that the 13C/12C ratio is lower than that predicted by the natural occurrence of these isotopes. This finding suggests that the methane was produced by ________.
A. oxidation of sulfite B. the metabolic activity of microorganisms C. a radioactive decay process D. a geochemical process
Which one of the following is TRUE regarding electrons, shells, and energy?
A) Electrons are located in shells around the nucleus. B) Electrons are attracted to each other because they have the same charge. C) In order for an electron to move closer to the nucleus, it must absorb energy. D) The innermost electron shell has the most potential energy. E) As an electron moves to a shell further from the nucleus, it loses energy.
All of the following are true for Amoebas except the following:
A. Eat by diffusion B. Are part of the phylum Rhizopods C. Move by pseudopod D. Is a animal like protist
Regarding syphilis, which one of the following is most accurate?
A. The characteristic lesion of primary syphilis is a painful vesicle on the genitals B. In secondary syphilis, the number of organisms is low, so the chance of transmitting the disease to others is low C. In secondary syphilis, both the rapid plasma reagin (RPR) and the fluorescent treponemal antibody-absorbed (FTA-ABS) tests are usually positive D. The antibody titer in the FTA-ABS test typically declines when the patient has been treated adequately E. In congenital syphilis, no antibody is formed against T. pallidum because the fetus is tolerant to the organism