Habitat
What will be an ideal response?
The physical place and the distribution where an organism occurs
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Diffusion of morphogens--products of master genes--creates gradients that cause the differential
expression of other genes such as __________, which govern the formation of specific body parts. Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT a nitrogenous waste product produced by the excretory systems of animals?
A. ammonia B. urea C. bile pigments D. uric acid
The net weight of all of the organisms living in an ecosystem is its
A. combined output of metabolism and photosynthesis. B. photosynthesis minus metabolism. C. productivity. D. biomass. E. vital force.
The peripheral proteins may also function in
What will be an ideal response?