If an organism has five pairs of chromosomes, how many chromosomal combinations are possible at metaphase I of meiosis?
A. 52
B. 105
C. 510
D. 25
E. None of the answers are correct
D
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What are the main functions of the leaf shape and position?
a. Absorb sunlight and nutrients b. Absorb sunlight and water c. Absorb sunlight and exchange gasses d. Attract pollinators and exchange gasses e. Attract pollinators and seed dispersers
What would happen to immunoglobulin genes if alternative mRNA splicing was nonfunctional?
A. Transcripts would contain a single V region only. B. Transcripts would contain all possible V, D, J, and constant regions. C. Transcripts would have extra V, D, and J segments attached to a single constant region. D. Transcripts would have single V and D segments, but extra J segments and constant regions. 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 mRNA splicing? 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?
For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entropy of the reactants is 0.2 kJ/K. The entropy of the products is 0.3 kJ/K. The temperature of the reaction is 25 degrees Celsius. What can you conclude about this reaction?
A. it is a redox reaction B. It is being catalyzed by an enzyme C. It is endergonic D. It is exergonic
Many people who start exercise plans as a way of reducing their weight are frustrated because they may initially gain weight rather than lose it. This is because
A. muscle weighs more than fat. B. protein has more Calories than fat. C. fat has more Calories than protein. D. carbohydrates have more Calories than fat.