Phototrophic Microbial Mats
What will be an ideal response?
--Microbial mat, Elkhorn Slough, CA
--Cyanobacteria & diatoms
--Purple bacteria
--Green bacteria
--Sulfate reducers
--Exopolysaccharides give the layers a mat-like consistency.
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Why does the function of many receptor kinases depend on the fluid nature of the plasma membrane?
What will be an ideal response?
Air becomes deoxygenated during the ____ of a bird’s respiratory cycle
a. first inhalation b. first exhalation c. second inhalation d. second exhalation e. third exhalation
Which group of organisms are likely to live in the low tide zone?
a) Hermit crab, rock weed, sea lettuce b) Rock louse, periwinkle, limpet c) Buckshot barnacle, striped shore crab d) Sea star, brittle star, sea urchins
A small country begins to experience stable economic prosperity after centuries of extreme poverty
The government uses the taxes generated for educating all members of the population and creating a comprehensive health care system for all of its citizens. A social security system is established to support elderly members of the population. What demographic changes would you expect to see? A) No changes in the population B) Earlier childbearing and many more children per woman, with a decrease in the number of elderly people C) Reproductive rates far below replacement-level fertility D) Large numbers of elderly people and no children E) A decrease in the number of deaths and an increase in the number of births and delayed childbearing