Chlamydia trachomatis produces a dormant, resistant stage which is transmitted from one host to another.
Answer the following statement true (T) or false (F)
True
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What is production efficiency?
A. The rate of photosynthetic fixation as a function of temperature. B. The percentage of energy assimilated by an organism that becomes new biomass. C. The amount of energy used by organisms at every node of a food web. D. Consumption of primary production by the second and third levels of a food web. E. The net gain to an ecosystem based on photosynthetic production.
Bogs have low net primary productivity because of the low levels of which resources?
a. oxygen and carbon b. nitrogen and phosphorus c. nitrogen and oxygen d. phosphorus and oxygen
The normal flora that inhabit our body surfaces ____
a. are harmful b. competitively exclude more harmful species c. produce vitamin C d. become even more beneficial if they invade tissues e. participate in phagocytosis of pathogens
Innate immunity is not effective against fungus infections.
Answer the following statement true (T) or false (F)