Where does the O2 come from in the light-dependent reaction?
What will be an ideal response?
Ans: During the photolysis of water, oxygen is liberated.
The splitting of water is associated with photosystem
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Giardia lamblia, spread by water contaminated with feces, forms resistant ____
a. endospores b. exospores c. cysts d. sporangia e. trophozoites
To meet the high oxygen demands of flight, birds _____
a. use simple lungs b. use air sacs connected to their lungs c. use carbon dioxide for respiration d. can diffuse oxygen through their skin e. use simple lungs, and can diffuse oxygen through their skin
Which is an example of a density-independent factor on a population?
A. weather B. nesting sites C. intraspecific competition D. amount of prey E. predation
The life history traits favored by selection are most likely to vary with
A) fluctuations in K. B) the shape of the J curve. C) the maximum size of a population. D) population density. E) population dispersion.