Current Location 1. Principles of Biology (BIO102.SP13.ZB) 2. Assignments 3. ... 4. Module 4 Quizzes, Exam, and Study Materials 5. Review Test Submission: Module 4 Exam - Part 1 Multiple Choice/True/False Skip to Course Content Skip to Top Frame Tabs Menu Management Options Principles of Biology (BIO102.SP13.ZB) Home Page Announcements Staff Info Syllabus & Resources Assignments Discussion Board
My Grades Send Email Apps Review Test Submission: Module 4 Exam - Part 1 Multiple Choice/True/False Skip to Course Menu Skip to Top Frame Tabs Content User Rebekah Breitkreutz Course Principles of Biology (BIO102.SP13.ZB) Test Module 4 Exam - Part 1 Started 3/5/13 7:01 PM Submitted 3/5/13 7:56 PM Status Completed Attempt Score 24 out of 40 points Time Elapsed 55 minutes out of 1 hour. Instructions Question 1 0 out of 1 points The Calvin cycle reactions only occur in bundle sheath cells in a C 4 plant Answer Selected Answer: because rubisco is only found in mesophyll cells. Correct Answer: to shield the Calvin cycle reactions from O 2 in the leaf spaces. Response Feedback: C4 plants must close stomata to stem water loss, causing the problem of O 2 binding to rubisco as CO 2 is depleted and O 2 accumulates. They perform the Calvin cycle reactions in bundle sheath cells to shield them
from O 2 in the leaf spaces. Question 2 0 out of 1 points What is the major disadvantage of CAM photosynthesis relative to C3 or C4 photosynthesis? Answer Selected Answer: less water loss Correct Answer: lower G3P yield Response Feedback: CAM plants can obtain CO 2 easily, but must close stomata more frequently to minimize water loss, resulting in a lower overall photosynthetic yield. Question 3 0 out of 1 points Energy to drive the formation of ATP in photosynthesis is derived from ____________. Answer Selected Answer: NADPH Correct Answer: H + gradient Response Feedback: Movement of hydrogen ions back down the concentration gradient at ATP synthase is used to drive ATP formation. Question 4 0 out of 1 points A new species of plant is discovered and you are asked to help classify it. Upon examination under a microscope, you find that there is a layer of bundle sheath cells containing chloroplasts around the vein of the leaf of the plant. What can you tell about the plant from this? Answer Selected Answer:
This is a C 3 type of plant. Correct Answer: This plant very likely carries out C 4 photosynthesis. Response Feedback: C 4 plants have chloroplasts in the bundle sheath cells surrounding the veins where the Calvin cycle is carried out. Neither C 3 nor CAM plants have this leaf anatomy. Question 5 0 out of 1 points Before being converted into sucrose, starch, or cellulose, G3P must first be converted into which compound?
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