You have isolated a protein within the nucleus for further study. What would you

Question

You have isolated a protein within the nucleus for further study. What would you expect to find with respect to this protein? A) a signal recognition protein sequence B) highly charged amino acids that disrupt DNA C) a nuclear localization signal D) a long sequence of hydrophobic amino acids In cellular respiration, ________ is reduced and _______ is oxidized. A) oxygen: glucose B) carbon dioxide: water C) pyruvate: oxygen D) glucose: water Which of the following occurs when ATP hydrolysis is coupled to a reaction that requires an input of energy? A) the free energy level (G) of the activated reactants rise above that of the products B) a phosphate group is transferred to the products C) the overall free energy change (delta G) becomes positive D) electrons from ATP synthesis are given to electron carriers Correct sorting of products produced by the rough endoplasmic reticulum depends on: A) correct sorting at the trans face of the B) the activity of enzymes in C) glycosylation D) all of the above What would happen if a cell was exposed to cyanide, a poison that inhibits a protein complex of the electron transport chain? A) ATP levels would fall, NADH would accumulate causing a strong proton gradient B) ATP levels would fall, NADH would an accumulate and the proton gradient would diminish C) ATP levels would rise, NADH would diminish with a strong proton gradient D) ATP levels would fall, NADH would diminish with a weak proton gradient In a pulse-chase experiment, heavy nitrogen (15 N) is added to media to label proteins and then removed after 30 minutes and replaced with normal media. Where would you not expect to find a large percentage of the labeled proteins within the first few minutes? A) rough endoplasmic reticulum B) golgi apparatus C) transport vesicles D) nucleus Why must cells undergo the process of cellular respiration nearly all of the time? For... A) coupling reactions B) movement C) active transport D) all of the above Under what does membrane transport require energy? A) whenever oxygen is moved through a phospholipid bilayer B) whenever large molecule are moved into a cell C) whenever an ion passes through a transport protein D) whenever a solute is moved against its concentration gradient Disruption of which of the following would prevent transport vesicles from getting to their correct destination? A) microfilaments B) microtubules C) intermediate filaments D) cilia After the citric acid cycle but before the electron transport chain, the majority of the energy that was in the bonds of glucose... A) was lost as heat B) is in the form of ATP C) was given off as carbon dioxide D) is being carried by electron carriers

Explanation / Answer

Answer:

37) c - nuclear localization signal

38) In cellular respiration oxygen is reduced and glucose is oxidized. (option a is correct)

39) b - A phosphate group is transferred to the products

45) b - microtubule

46) d - is being carried by electron carriers.

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