Which developmental stage occurs first?
a. cleavage
b. fetus
c. gastrula
d. zygote
e. blastula
d
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The right atrium secretes atrial natriuretic hormone (ANH), which stimulates the kidneys to excrete salt and water into the urine. ANH acts antagonistically to what other hormone?
A. cortisol B. aldosterone C. glucagon D. thyroxine E. progesterone Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about hormones? What other information is related to the question? Choose Answer Given what you now know, what information 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?
The first product produced by genetic manipulation and recombinant technology was ________.
A. penicillin B. cortisone C. amylase D. insulin
Compare the composition, structure, and function of cilia and flagella
What will be an ideal response?
Energy flows into the biological world from the:
A. large animals B. oceans C. volcanoes D. plants E. sun