Test 2 2024 Plant Physiology PDF

KIYANA KENNICE REYNOLDS  Dashboard › My courses › 2024-1 BIOL2151 › WEEK 10: PHOTOSYNTHESIS 2 AND GROWTH & DEVELOPMENT (14-17/10/24) › Test 2 2024 PLANT PHYSIOLOGY Test 2 2024 Started on Tuesday, 22 October 2024, 10:08...

KIYANA KENNICE REYNOLDS  Dashboard › My courses › 2024-1 BIOL2151 › WEEK 10: PHOTOSYNTHESIS 2 AND GROWTH & DEVELOPMENT (14-17/10/24) › Test 2 2024 PLANT PHYSIOLOGY Test 2 2024 Started on Tuesday, 22 October 2024, 10:08 AM State Finished Completed on Tuesday, 22 October 2024, 11:21 AM Time taken 1 hour 13 mins Marks 54.00/70.00 Grade 77.14 out of 100.00 Question 1 Correct Mark 8.00 out of 8.00 Pictionary: Match the picture with the correct carbon fixation pathway for each question. C4 Pathway C3 Pathway  CAM Pathway CAM Pathway Your answer is correct. The correct answer is: → C4 Pathway, → C3 Pathway,  → CAM Pathway, → CAM Pathway Question 2 Incorrect Mark 0.00 out of 2.00 Short-answer question: A one-word or one-phrase answer. Is the amount of light available for Photosynthesis, wavelengths are between 400 and 700 nm: Visible light The correct answer is: Photosynthetically Active Radiation Question 3 Correct Mark 2.00 out of 2.00 In the picture, below, the box represent the Enhancement E!ect – mechanism involving the two photosystem, in series, one after the other, one absorbs in red and the other in far-red visible spectrum. The arrows represent the Z – diagram. The two photosystems solves the problem in obtaining reducing power in a simple way. 2-electron steps. True False The correct answer is 'True'. Question 4 Correct Mark 2.00 out of 2.00 Photosynthesis uses ________ energy to drive electrons ___________ away from water molecule to a weaker electron acceptor. a. chemical and downhill b. chemical and uphill c. light and uphill d. light and downhill Your answer is correct. The correct answer is: light and uphill Question 5 Correct Mark 2.00 out of 2.00 Oxygen is produced during photosynthesis when: a. The carbon is removed from carbon dioxide to make carbohydrates b. water molecules are split to provide electrons for photosystem II c. Hydrogen from water is added to carbon dioxide to make carbohydrates. d. Water molecules are split to provide electrons for photosystem I Your answer is correct. The correct answer is: water molecules are split to provide electrons for photosystem II Question 6 Incorrect Mark 0.00 out of 2.00 RuBisCO can act as either a carboxylase (incorporating CO2) or as an oxygenase (incorporating O2). In the presence of relatively low CO2 levels, rubisco acts mainly as a carboxylase. When oxygen levels are high, RuBisCO acts as an oxygenase and incorporates O2. True False The correct answer is 'False'. Question 7 Correct Mark 2.00 out of 2.00 How much photons are required to transfer the electrons in the production of one molecule of oxygen? a. 4 b. 2 c. 10 d. 6 e. 8 Your answer is correct. The correct answer is: 8 Question 8 Correct Mark 2.00 out of 2.00 In Regeneration of the C3 carbon fixation pathway, how much ATP and NADPH are required to fix 6 molecules of CO2? a. 12 ATP and 18 NADPH b. 6 ATP and 9 NADPH c. 9 ATP and 6 NADPH d. 18 ATP and 12 NADPH Your answer is correct. The correct answer is: 18 ATP and 12 NADPH Question 9 Incorrect Mark 0.00 out of 2.00 What is the final product of the Carboxylation phase in the Calvin-Benson Cycle? a. Glucose b. G3P c. RuBP d. PGA Your answer is incorrect. The correct answer is: PGA Question 10 Correct Mark 2.00 out of 2.00 This process Involves photolysis of water and production of reduced NADPH and ATP. Electrons travel from PSII to PSI and then to NADP:__________________________ a. Cyclic photophosorylation b. Non-cyclic photophosorylation c. Cyclic electron transport  d. Non-cyclic electron transport Your answer is correct. The correct answer is: Non-cyclic photophosorylation Question 11 Correct Mark 2.00 out of 2.00 Excited P700 gives its electron to Fe3+ in one of the Fe-S protein associated with it and the electron is then passed to a ferredoxin (Fd) molecule, reducing its Fe3+ to Fe2+. True False The correct answer is 'True'. Question 12 Correct Mark 2.00 out of 2.00 How many photons are required to transport three electrons? a. 4 b. 10 c. 6 d. 2 e. 8 Your answer is correct. The correct answer is: 6 Question 13 Correct Mark 10.00 out of 10.00 Definitions: Match the description phrase/sentence with the correct word or phrase. Pheophytin Is the primary electron acceptor, colorless chlorophyll a. PEPcase Enzyme that initiates carbon fixation in C4 plant species In Photosynthesis, these are the packets of light energy absorbed by specific Quanta pigments. Plastocyanin A electron carrier with a small copper-containing protein. Solarization Deathly adaptation by plants, from shade leaves to sun leaves. Your answer is correct. The correct answer is: Is the primary electron acceptor, colorless chlorophyll a. → Pheophytin, Enzyme that initiates carbon fixation in C4 plant species → PEPcase, In Photosynthesis, these are the packets of light energy absorbed by specific pigments. → Quanta, A electron carrier with a small copper-containing protein. → Plastocyanin, Deathly adaptation by plants, from shade leaves to sun leaves. → Solarization Question 14 Correct Mark 2.00 out of 2.00 Short-answer question: A one-word or one-phrase answer. The solar exposure when photosynthesis just balances respiration, i.e., the CO2 exchange is zero, is called: light compensation point. The correct answer is: Light Compensation Point Question 15 Correct Mark 2.00 out of 2.00 The following are all factors that a!ect the photosynthesis rate, except? a. Leaf Age b. Atmospheric Temperature c. Water d. Leaf Surface Your answer is correct. The correct answer is: Leaf Surface Question 16 Incorrect Mark 0.00 out of 2.00 The accessibility of Carbon Dioxide is in the mesophyll cells in C3 and C4 plants. True False The correct answer is 'False'. Question 17 Correct Mark 2.00 out of 2.00 C4 photosynthesis is an adaptation to hot, dry conditions in which __________________________________________________________. a. CO is fixed and stored in the leaf 2 b. oxygen is stored in the root c. light energy is stored in chloroplasts. d. water is stored in the stem Your answer is correct. The correct answer is: CO2 is fixed and stored in the leaf Question 18 Correct Mark 2.00 out of 2.00 Short-answer question: A one-word or one-phrase answer. It is oxidative photosynthetic carbon cycle that is the evolution of CO2 during photosynthesis. It arises because RuBisCO can act as either a carboxylase or as an oxygenase: Photorespiration The correct answer is: Photorespiration Question 19 Incorrect Mark 0.00 out of 2.00 Within chloroplast, where are the ATP synthesize? a. thylakoid membrane b. thylakoid lumen c. stroma d. grana Your answer is incorrect. The correct answer is: thylakoid membrane Question 20 Complete Mark 5.00 out of 10.00 In the C3 pathway, explain the reactions that occurs in carboxylation and reduction phases of Calvin-Benson Cycle. Include the names of the enzymes involved in the reactions.  Carboxylation is the very first step in the Calvin -Benson Cycle where the carbon d 5 carbon molecule called RuBP.this reaction then catalyzed by the enzyme RuBisCO.Pr (Phosphoglycerate ).Which is a 3 carbon compound. And then finally in the reduction phase ATP ,and NADPH.(which are energy carries f are used to convert 3 -PGA into G3P (which is a sugar molecule ) This process involves adding energy to the molecule through the process called phos (With the help of ATP) and then resulting in a reduction of the use of electrons fr Word count: 103 Comment: Question 21 Partially correct Mark 1.00 out of 2.00 Which region of a chloroplast is associated with the capture of light energy? a. Thylakoid Membrane b. Stroma c. Thylakoid Lumen d. Grana Your answer is partially correct. You have correctly selected 1. The correct answers are: Stroma , Thylakoid Membrane Question 22 Correct Mark 2.00 out of 2.00 The electrons originate from water and ends up at NADPH. True False The correct answer is 'True'. Question 23 Correct Mark 2.00 out of 2.00 The reactions of the synthesis of ATP, NADPH and transport of electron are called? a. Light dependent reactions b. Light independent reactions c. Redox reactions d. Substitution reactions Your answer is correct. The correct answer is: Light dependent reactions Question 24 Correct Mark 2.00 out of 2.00 Some plants seem to be shade obligated plants (Sunflower) and others are sun obligated plants (Alocasia) True False The correct answer is 'False'. ◀ Generic Lecture Generic Lecture Notes 6 Jump to... Notes 4 ▶︎