When tracing the path of blood, the blood vessles that follows the renal artery is the
a. peritubular capillary
b. efferent arteriole
c. afferent arteriole
d. renal vein
Ans: c. afferent arteriole
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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?
FAD, NADP, NAD, and coenzyme A are all carriers of ________.
A. hydrogens B. ATP C. electrons D. Both hydrogens and electrons are correct.
Prophase, metaphase, anaphase, and telophase are part of which larger phase?
a. G1 phase b. S phase c. G2 phase d. M phase e. R phase
Which events and features are correctly associated with the roots during the pressure-flow model of phloem transport?
Select one: a. Sugar is stored in the sink. Cells use the sugar for cellular respiration. Water exits by osmosis and returns to the xylem. b. Sugars are stored in the source. Cells use the sugar for cellular respiration. Water exits by osmosis and returns to the xylem. c. Sugar is stored in the sink. Cells use the sugar for photosynthesis. Water exits by osmosis and returns to the xylem. d. Sugar is stored in the sink. Cells use the sugar for cellular respiration. Water exits by diffusion and returns to the phloem. e. Sugar is stored in the source. Cells use the sugar for photosynthesis. Water exits by osmosis and returns to the xylem.