A surge in __________ triggers tadpole

metamorphosis.
a. testosterone
b. cortisol
c. atrazine
d. thyroid hormone
e. pheromones


Answer: d

Biology & Microbiology

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Chemical inhibitors of hormone synthesis or signaling are powerful tools that yield invaluable information about hormone function.  Triadimefon, propiconazole, and spironolactone are just a few of the compounds identified to inhibit the function of brassinosteroids (BR). Which of the following are probable physiological effects due to the inhibition of BR? Check all that apply.  

_____  reduced mitotic activity _____  rapid aging _____  reduced xylem and phloem differentiation _____  increased stem length Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean?   Gather Content · What do you already know about brassinosteroids? How does it relate to the question?   Consider Possibilities   · What other information is related to the question? Which information is most useful?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

The hypothesis that says, "as one species changes so will the other," is called the ________

a. Law of Independent Assortment b. Red Queen hypothesis c. Law of Thermodynamics d. Principle of Genetics e. Evolutionary Divergence

Biology & Microbiology

Explain the effect of high altitude on breathing control

What will be an ideal response?

Biology & Microbiology

Which of the following occurs between meiosis I and meiosis II?

A. DNA replication B. Crossing over C. Random assortment D. Reduction of chromosome number E. None of these occur between meiosis I and meiosis II

Biology & Microbiology