In the process of quorum sensing, bacteria release signal molecules in _____ concentration as cell
density _____.
a. increasing; decreases d. decreasing; decreases
b. increasing; increases e. a constant; increases
c. decreasing; increases
B
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Consider the data in Fig. 46.8 illustrating the age structure of France and India. In many parts of the world, the average age of reproductive maturity is increasing as humans move from urban to rural environments
Suppose that the current average age of first reproduction is 15 years in India and 20 years in France. How would a 5-year increase in the average age of reproductive maturity in both countries be expected to affect the per capita birth rate, and would this effect be greater in France or in India? A. increase in per capita birth rate, greater effect in India B. increase in per capita birth rate, greater effect in France C. decrease in per capita birth rate, greater effect in India D. decrease in per capita birth rate, greater effect in France
Steroid and thyroid hormones do not bind to membrane surface receptors because they ____
a. are small enough to pass directly through the membrane b. are soluble in the lipid bilayer c. pass through special membrane channels d. are water-soluble e. dissolve in the cholesterol present in cell membranes
The reproductive biology of hagfishes is well understood
Indicate whether the statement is true or false
Organism that can capture energy and synthesize organic molecules from inorganic nutrients.
What will be an ideal response?