At what step in meiosis do the daughter cells become haploid?
A. metaphase 2
B. anaphase 1
C. anaphase 2
D. prophase 2
B
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Tetrodotoxin is a potent poison, produced by some newts, pufferfish, and blue-ringed octopus that affects sodium transport involved with the voltage gates in neurons. A friend swimming in the Caribbean is pricked by a pufferfish and gets very sick. The most likely action the poison takes is
A. Mimicking a symporter and allowing sodium to rush out and potassium to rush in. B. Mimicking an antiporter and allowing sodium to rush out. C. Blocking an antiporter so sodium cannot rush in. D. Blocking a symporter and keeping sodium from rushing in. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the effects of tetrodotoxin on ion movement in neurons? What other information is related to the question? 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?
Why do vascular plants need phloem?
A. because they grow very tall B. because not all parts of the plant are photosynthetic
Which of the following is not a correct pairing?
A. FGF: bone formation B. histamine: swelling around a wound C. NGF: survival of nerve cells D. histamine: blood vessel dilation E. All of the answer options are correct.
When working out with his wife, Ed has noticed he has to drink much more Gatorade than his wife does following their workouts. What fact could explain this difference in their workout requirements?
A) Females utilize glucose more efficiently than males. B) Females utilize more fat to produce energy than males. C) Females effectively increase their glucose metabolism during exercise compared to males. D) Females store more body sugars than males.