Chromosomes coil tightly around chromosomal proteins and condense during
A) prophase.
B) metaphase.
C) anaphase.
D) telophase.
A) prophase.
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What is the likely outcome if you were able to force water through fish gills in the opposite direction to how it normally flows over the gills?
A. There would be no effect, and maximal oxygenation of blood would still occur. B. The direction of blood flow would reverse through the gills to compensate for the reversed direction of water flow. C. Gas exchange would be inhibited and movement of oxygen into the blood would cease. D. The movement of carbon dioxide from the blood into the water would increase. E. The blood's oxygen concentration would not be able to exceed 50%. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about fish gills? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Marsh periwinkles are able to survive out of the water because their ________ can absorb oxygen from the air
a. muscular foot b. mantle cavity c. radula d. operculum
Cytokinesis Role
What will be an ideal response?
Is it unusual to find elevated levels of iridium in the geologic layer at the K–T boundary?
a. Yes, iridium is a common metal on Earth but rarely accumulates in a singe layer. b. No, iridium is a rare element on Earth, but geological layers of iridium are not uncommon. c. Yes, iridium is a rare metal on Earth. d. Yes, composition differences between geological layers tend to equilibrate over time.