The regulatory protein
A. binds to the promoter region of DNA.
B. may inhibit or enhance transcription.
C. may control translation of the operon.
D. affects the activity of the DNA polymerase.
E. binds to the promoter region of DNA AND affects the activity of the DNA polymerase.
B
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Eutrophication describes:
A. the process in which added nutrient levels lead to the growth of algae and cyanobacteria populations. B. the reduction of oxygen in the water as a result of bacterial decomposition. C. the total amount of nitrogen fertilizer that leaves agricultural fields as surface runoff. D. the increased production of crops using fertilizer. E. the death and decomposition of algal blooms.
Which are important components of the communication between the hypothalamus and anterior pituitary? (Check all that apply.)
_____ ADH and oxytocin _____capillaries _____ fibrous pituitary stalk _____GHIH, PIF, and MIH _____ hormones _____hypothalamohypophyseal portal system _____ transport of hormones down axons _____ TRH, CRH, GnRH, and GHRH
Of the following, which is not a characteristic of protists?
A. They have membrane-bounded organelles. B. They have a nucleus. C. They are prokaryotes. D. They are eukaryotes. E. All of the answer choices are correct.
Members of the order Desulfovibrionales use which of the following as electron acceptors during anaerobic respiration?
A. CO2 B. Organic acids and alcohols C. O2 D. Elemental sulfur or sulfate