What is characteristic of adult frog respiration?
A. Gills
B. Sucking air into their lungs using chest muscles
C. Countercurrent exchange
D. Drawing in air by lowering their mouth floor
E. Drawing water by inhalation across their gills
Answer: D
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Which of the following activities in the roots does not require energy?
A. transport of solutes into the cytoplasm B. making specific nutrients in the soil available to the root C. supporting symbiotic relationships with soil microorganisms D. absorbing water into the root hair E. All root activities require energy.
Answer the question using the accompanying figure. All of the orbitals shown in the neon atom are completely filled
with electrons. How many electrons does this neon atom have?
a. 5 b. 6 c. 8 d. 10 e. 16
Each of the following ligands binds to an intracellular receptor except
A) cortisol. B) retinoic acid. C) thyroid hormone. D) epinephrine. E) estrogen.
Which structure helps bacteria to attach within the tissues that they will infect?
a. Flagella b. Cell wall c. Capsule d. Nucleoid