BIO 2870 - LECTURE EXAM (I) - S/S 2010 Multiple Choice & T/F Identify the letter of the choice that best completes the statement or answers the question. The answer to number fifty six is a. 1. During exercise, creatine phosphokinase phosphorylates ADP with a phosphate obtained from phosphocreatine in a process called substrate level phosphorylation: a. true b. false I contrasted substrate level phosphorylation with oxidative phosphorylation. 80% of you got this one right. 2.The efferent information of the parturition (child labor) feed-back loop activates ______________ channels of the uterus: a.voltage-gated c.enzyme-gated b.mechanically-gated d.ligand-gated The efferent information is oxytocin. If oxytocin causes the smooth muscle of the uterus to contract, it must do so by binding to ligand-gated channels. 12% of the class (206 people took the exam) chose C. I never talked about enzyme-gated channels. I didn’t because they don’t even exist. 53% chose B. They did this because they confused Afferent with Efferent. Only 30% of you got it right. Fair question? Yes. 3.Which of the following membranes does not come into direct physical contact with mediastinum: This was discussed on slides 1-27 thru 1-32. 73% percent of you got this one right. 12% chose D.
4. Which of the following is true of simple columnar epithelium: when found lining the lumen of the fallopian tubes (oviducts) it has apical surface stereocilia when found lining the lumen of the small intestine is has a brush border I lectured that goblet cells are not present in the stomach. I also said the fallopian tubes have cilia (not stereocilia) to move the egg (or zygote) to the uterus. Don’t believe me? Listen to the recording. This rules out choices A and B, and therefore D and E since they contain these incorrect choices. 80% of you got this wrong. Some people say if less than 75% of a class gets a question correct that it is unfair. I disagree. Fair question? Absolutely! 5.All of the following substances are organic EXCEPT: This one is very interesting. 60% got it right. However, that means there are a lot of you that think A, B and C are inorganic. 20% said phosphatidylcholine is NOT organic. Molecules do not get much more organic than this people, not to mention the fact that it is in my notes under organic molecules.
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