Which heart valve is found on the right side of the heart?
a. vena cava valve
b. aortic valve
c. tricuspid valve
d. bicuspid valve
c. tricuspid valve
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The skeletal muscle that flexes (bends) the forearm after pronation (palm down position as in a pull-up) is the brachialis. Its origin is the humerus, and the insertion is the upper front of the ulna. Identify the class of lever involved and explain why you made this choice.
What will be an ideal response?
A large watermelon fruit is very heavy and contains nearly 90% water. Since the skin of a watermelon is thick and lacks stomata, transpiration does not "pull" water into the watermelon. So, how does all that water get into the fruit?
A. Root pressure pushes water into the watermelon. B. Water enters by osmosis from the soil. C. Water is pumped in by active transport. D. Water is transported in the phloem along with the sugars while they are being translocated into the fruit. E. Watermelons, like other fruit, contain an abundance of xylem. 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 how water moves through the tissues in a plant? 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?
What is the purpose of the two-hybrid system?
A) to study the nature of two hybrid organisms at a time B) to study the interaction between an enhancer and a promoter C) to explore a cDNA library to find interacting DNA sequences D) to discover how and whether two proteins interact E) to locate the chromosomal position of hybridized genes
Which of the following activities is likely to deplete an aquifer fastest?
A) desert trees B) deep-well drilling for farms C) using chlorofluorocarbons D) employing molybdenum-based fertilizers