Most of the animals living in the rocky intertidal are:
a. infaunal.
b. epifaunal.
c. epiphytic.
d. meiofaunal.
e. pelagic.
B
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Which factor is least useful for making predictions about how urbanization and climate change will affect the carbon
cycle?
a. the architecture of the canopy of trees overhead b. leaf positioning c. leaf losses d. timing of natural events e. extent of agricultural practices
Which of the following statements about plant cytokinesis is true?
a. It begins when telophase ends. b. A division furrow completely separates the cytoplasm. c. It is under the control of Ca2+. d. Vesicles fuse to form a cell plate. e. The spindle fibers break down to form a cell plate.
Your body produces all the following digestive enzymes, but not all of them are produced where they are used. Which of the following is produced at a different location from where it is used?
A) lactase B) salivary amylase C) pepsin D) sucrase
A scientist makes three artificial mRNA strands:
(x) 5' AAAUUUAAAUUUAAAUUUAAAUUUAAA 3' (y) 5' UUUCCCUUUCCCUUUCCCUUUCCCUUU 3' (z) 5' AUAUAUAUAUAUAUAUAUAUAUAUAU 3' When he analyzes the polypeptides produced, he finds that: x produces a polypeptide that is 50% phenylalanine and 50%lysine. y produces a polypeptide that is 50% phenylalanine and 50% proline. z produces a polypeptide that is 50% isoleucine and 50% tyrosine. Based on these results only, the best conclusion to make is that A. AUA codes for isoleucine B. AAA codes for phenylalanine C. AAA codes for lysine D. AAA codes for lysine and AUA codes for isoleucine E. AAA codes for phenylalanine and AUA codes for isoleucine 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 the genetic code? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?