Diffusion of morphogens influences 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).
homeotic genes
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According to Fig 9.10, which of the following is NOT responsible for amplifying the signal in a cell responding to adrenaline signaling?
A. the binding of the receptor by adrenaline B. the production of cAMP by adenylyl cyclase C. the activation of protein kinase A by cAMP D. the phosphorylation of proteins by protein kinase A E. All of these choices amplify the adrenaline signal.
An ecosystem such as a forest in the Pacific
Northwest of the United States is made up of
a. plants, animals and fungi. b. organisms and nonliving things. c. rocks and minerals. d. plants, protozoa, and fungi. e. all of these.
How do we know that some of the microbes in our gut are beneficial to us?
What will be an ideal response?
A nursing baby:a
lacks cell mediated immunity. b. lacks antibody mediated immunity. c. lacks an adaptive immune response. d. receives active immunity via the breast milk. e. receives passive immunity via the breast milk.