lecture2 quiz questions

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Queens University *

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102

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Biology

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Dec 6, 2023

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docx

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Uploaded by ColonelAtomTurkey34

1. Many antibiotics, which are molecules that are toxic to bacteria, function as enzyme inhibitors. Imagine that both antibiotic A and antibiotic B inhibit the ribosome. Antibiotic A kills the bacteria. In contrast, Antibiotic B only temporarily stops growth, with the bacteria remaining alive and able to resume growth when the antibiotic is removed. Which of the following statements provide a reasonable explanation for the difference between antibiotic A and antibiotic B. a. Antibiotic A is a non-reversible enzyme inhibitor whereas antibiotic B is a reversible enzyme inhibitor. 2. ATP is an important molecule in cellular energetics. Which of the following statements is true? a. ATP hydrolysis can provide the energy required for mechanical work in a cell 3. The human hormone insulin causes liver cells to increase the rate they convert glucose to glycogen for storage. Based on this information, which of the following might occur in a liver cell exposed to insulin? Choose only the best response based on only information presented in this course. 4. Imagine you are working in a lab, and you are performing two chemical reactions. You notice that reaction a and reaction b occur at the same rate, and that reaction a releases more heat than reaction B. which of the following conclusions can be made from your observations. a. Reaction a has the same activation energy as reaction B, and the change in G of reaction a is more negative than the change in G for reaction B 5. There are many similairties between the process of photosynthesis and the process os cellular respiration. Which of the following is not accutrate comparioson of photosynthesis and cellular respiration a. Only cellular respiarion involves redox reactions 6. Which of the following statements about quorum sensing are true? a. There is a specificity in quorum sensing, meaning not all bacteria can respond to all quarum sensing moleucles 7. Algae are single-celled eukaryotic organisms that performa photosynthesis. Some algae are known as red algae as they appeared in colour due to their photosynthetic pigments. Other algae are known as green algae as they appear green in colour due to their photosynthetic pigments. Based on this information, which of the following statements are reasonable? Choose only the best answer a. It is likely that the red algae contain chloroplast 8. Below is an image showing how cellular respiration is regulated. Imagine someone ingested a toxin that prevents pyruvate from entering the mitochondria. Which of the following statements are true? a. The amount of citrate in the cell would decrease, leading to an increase in the activity of phosphofructokinse b. The amount of atp produced by the cell would decrease. Leading to an increase in the activity of phosphofructokinse 9.

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