In monocots such as palms considerable increase in girth is achieved by:
a. secondary growth.
b. primary growth.
c. a modified form of primary growth in which parenchyma cells divide and enlarge.
d. enlargement of primary xylem.
e. enlargement of primary phloem.
C
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You are asked to give a classroom demonstration of DNA supercoiling. To do so, you take two different colored pieces of rubber tubing, twist them very tightly and excessively around each other and join the ends of the tubing appropriately. Next, you relieve the supercoiling by breaking one strand and unwinding it. In this demonstration, the breaking and unwinding to relieve the supercoiling simulates the action of
A. exonucleases. B. polymerases. C. ligases. D. topoisomerases. E. primases. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about supercoiling? 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?
What is the net production of ATP molecules during glycolysis?
a. zero b. one c. two d. four
Which of the following is ABSENT in the charophyte ancestors of land plants?
a. spores b. gametes c. multicellular organs d. diploid embryos e. chlorophyll b
How did the control group differ from the
experimental group in the butterfly experiment? a. They were different species. b. Their native habitat area of the forest differed. c. They tasted worse. d. They had unmodified wing spots. e. They preferred different flower species.