Hepatitis A spreads via
A. the respiratory route.
B. blood transfusion.
C. body fluids.
D. the fecal-oral route.
D
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Examine this electron micrograph of a chloroplast.
a. Identify the stack of membranes labeled A. b. Identify the region labeled B. c. Would the production of organic compounds during the light-independent reactions occur in region b or on the membranes labeled a? d. Would you expect the plant in which this structure was found to have been illuminated with strong light immediately before it was prepared for electron microscopy? Why or why not?
What feature of both true mosses and ferns makes it most surprising that they can survive for many generations in dry deserts?
A) flagellated sperm B) lack of vascular tissues C) lack of true roots D) lack of cuticle
How are the light reactions and the Calvin cycle related to each other?
What will be an ideal response?
Which of the following is not a component of the physical habitat in which organisms live?
A. water B. wind C. bacteria D. rocks