What absorbs the photons of light in photosynthesis?
a. carotenoids
b. chlorophyll
c. chlorophyll and carotenoids
d. the thylakoid membrane
e. inner membrane of the chloroplast
C
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Because most natural populations are actually metapopulations, we can only understand their dynamics if, in addition to the births and deaths of individuals, we also understand:
A. the extinction of local populations. B. the colonization of local populations. C. r and K selection. D. the extinction and colonization of local populations. E. the extinction and colonization of local populations as well as r and K selection.
Which of the following types of mutation may play an important role in driving evolution because they are often nonlethal and, therefore, remain in the gene pool?
A. Frameshift B. Nonsense C. Missense D. Deletion
On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated, freshwater ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit exclusive breeding preferences. Which type of reproductive isolation operates to keep the mosquitofish isolated, even when fish from different ponds are reunited in the same body of water?
A. mechanical isolation B. gametic isolation C. temporal isolation D. behavioral isolation E. habitat isolation
Persons with asymptomatic infections may be (contaminants/reservoirs/zoonoses) of disease
What will be an ideal response?