A biologist discovered a new animal. Upon studying its embryonic development, she observed radial cleavage with the blastopore developing into an anus. This animal was categorized as a

A. parazoan.
B. deuterostome.
C. pseudocoelomate.
D. radiata.
E. protostome.


Answer: B

Biology & Microbiology

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The most reliable source of all essential amino acids in humans is:

A. meat. B. beans. C. corn. D. sunflower seeds. E. Doritos.

Biology & Microbiology

A procedure that divides organisms into two or more groups depending on their individual reactions to the same staining procedure is referred to as ________ staining.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Correctly rephrase the following famous quote from J. B. S. Haldane. "I would lay down my life in order to save two brothers or __________________."  

A.  one son or daughter B.  four cousins C.  three uncles D.  two nephews and one son or daughter E.  two grandsons or granddaughters 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 kin selection? 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? Reflection 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

If you conduct a monohybrid cross of two heterozygous Yy pea plants, what percentage of the offspring will be heterozygous? Select one:

a. 25% b. 100% c. 75% d. 50% e. 0%

Biology & Microbiology