In the noncyclic electron pathway, electrons are energized in ____ before they enter ____
What will be an ideal response?
photosystem II
an electron transport chain
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The North American maggot fly diverged into two species because some individuals fed on apples rather than hawthorn trees. Apple fruit mature more quickly than hawthorn fruit, therefore maggot flies that fed on apples also developed more quickly. Pea aphids can feed on alfalfa or red clover; some aphids have higher fitness when eating clover others when eating alfalfa. Host preference can
eventually lead to speciation because A. genetic differences develop. B. lower fitness may result from choosing the wrong host. C. temporal isolation may occur. D. anagenesis may occur. E. genetic differences develop, higher fitness and temporal isolation may occur.
Which molecule is the most abundant in the extracellular matrix of connective tissues?
a. collagen b. cholesterol c. fibronectin d. albumin e. elastin
Enrique was working with chemicals in a paint factory and suddenly lost the ability to detect odors. Could this loss have anything to do with a failure in the thalamus?
What will be an ideal response?
What enzyme breaks down PCr?
What will be an ideal response?