According to the above figure, which letter corresponds to the area where water is absolutely not reabsorbed?

A. A
B. B
C. C
D. D
E. E


Answer: C

Biology & Microbiology

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Plant cell walls contain

A. chitin B. collagen C. proteoglycans D. laminins E. cellulose

Biology & Microbiology

The greatest proportion of these two biomes has been converted to agriculture:a

taiga and tropical rain forest. b. tropical rain forest and temperate rain forest. c. temperate deciduous forest and temperate grassland. d. chaparral and tropical rain forest. e. temperate grassland and savanna.

Biology & Microbiology

In 1910, Morgan did a series of experiments with the fruit fly Drosophila, an organism where females are XX and males are XY. When a mutant male fly with white eyes was crossed with a wild type female with red eyes, none of the F1 progeny had white eyes but 18% of the F2 progeny had white eyes. Unexpectedly, all of these white-eyed F2 flies were males. Based on these results, Morgan concluded that white eyes is caused by a recessive X-linked allele. Suppose Morgan had found that half of the F1 progeny had white eyes but all of these white-eyed F1 flies were females. In this case, a valid hypothesis would be  

A.  White eyes is caused by a recessive Y-linked allele. B.  White eyes is caused by a dominant Y-linked allele. C.  White eyes is caused by a dominant X-linked allele. D.  White eyes is caused by a dominant autosomal allele. 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 X-linked inheritance?   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?

Biology & Microbiology

Which of the following reactions would you predict could be coupled to ATP hydrolysis to ADP + Pi to make it energetically favorable, or spontaneous? Choose all that apply

A. creatine phosphate + H2O creatine + Pi, G -10.3 kcal/mol B. phosphoenolpyruvate + H2O pyruvate + Pi, G -14.8 kcal/mol C. glucose 6-phosphate + H2O glucose + Pi, G -3.3 kcal/mol D. glucose 1-phosphate + H2O glucose + Pi, G -5.0 kcal/mol E. glutamic acid + NH3 glutamine, G +3.4 kcal/mol

Biology & Microbiology