Cephalization is associated with bilateral symmetry
Indicate whether the statement is true or false.
T
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Which of the following statements about the
electromagnetic spectrum is true? a. Infrared energy is sufficient to produce ionization. b. Infrared radiation has more energy than red radiation. c. Visible light has more energy than ultraviolet radiation. d. Chlorophyll absorbs some visible wavelengths, but not all. e. Chloroplasts absorb all wavelengths of visible light equally.
Under certain circumstances, a person's resident biota can act as opportunistic pathogens.
Answer the following statement true (T) or false (F)
Which of the following is the structure that allows blood to flow from the right atrium of the fetal heart
directly to the aorta, thus bypassing the nonfunctioning lungs? a. ductus arteriosus b. fossa ovalis c. ductus venosus d. foramen ovale e. allantois
These are mixtures of weak acids and the salts of weak acids that tend to maintain constant pH.
A. buffers B. oxidants C. electrolytes D. soft drinks