In an experiment, some herbaceous, nonwoody plants were exposed to frequent windy conditions or mechanical shaking for several hours per day. The flexibility of these plants was due to the ________ cells.
A. sclerenchyma
B. aerenchyma
C. parenchyma
D. periderm
E. collenchyma
Answer: E
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The effects of protein kinases are reversed by another group of enzymes called ____
a. hydrolases b. catalases c. isomerases d. phosphatases e. proteases
Which of the following would NOT include humans?
a. vertebrates b. animals c. protistans d. primates e. mammals
Most of the Earth's phosphorus is trapped in sedimentary rocks.
Answer the following statement true (T) or false (F)
Please refer to the table for question 107-110 in the 1999 test Which of the following can be correctly concluded about the relationship between intestinal length and body size for the organisms in the table?
A. Carnivores have greater intestinal length relative to body size than do herbivores B. Herbivores have greater intestinal length relative to body size than do carnivores C. Omnivores have greater intestinal length relative to body size, the more nutrients are absorbed. D. THe smaller the intestinal length relative to body size, the more nutrients are absorbed E. No relationship exists between intestinal length and mode of nutrition