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WorksheetsPhotosynthesis
Total questions: 15
Worksheet time: 8mins
In which cellular structure are the enzymes of the Calvin cycle localized?
chloroplast stroma
thylakoid space
mitochondrial intermembrane space
mitochondrial matrix
How many photos are required to generate one oxygen molecule during photosynthesis light reaction ?
2
4
8
12
陸地植物進行光合作用,將光能轉換成化學能儲存,在光線照射下,經由葉綠素 a 、葉綠素 b 、類胡蘿蔔素等組成的光系統吸收光能,由反應中心的葉綠體 a 激發出一個電子而進入 ETC。 有關ETC 的敘述,下列何者最正確 ?
由PS I 的水分解複合體分解水釋放氧氣
非循環ETC由PS II 開始進行,由NAD+ 還原酶與ATP合成酶生成 NADH 與 ATP
非循環ETC中,質體醌 (PQ) 會將氫離子打到類囊體
類囊體中累積的氫離子須經由ATP合成酶作為通道流至基質
當葉綠體的類囊體膜受損穿孔無法與基質有效區隔,下列何種反應最易受到影響?
水的光分解與氧的生成
葉綠體的光能吸收及電子激發
ETC 的功能與NADH生合成
質子驅動力的建立與ATP 的生合成
Which of the following does not match with its function?
Chlorophyll a : Component of P700 reaction center
ATP synthase: Chemiosmotic phosphorylation
Cyclic electron transport: Electron flow from water to NADPH
RuBP: Conjugates carbon dioxide
Carotenoids: Absorption of excess light
ETC 發生於粒線體內膜上,下列何種構造有相似於粒線體內膜的功能?
Gram-negative bacterial outer membrane
細胞核膜內膜
葉綠體內膜
類囊體膜
Which of the following enzymes is the most abundant protein in the chloroplast and incorporates CO2 molecules to ribulose diphosphate?
Aldolase
Rubisco
Phosphoglycerate kinase
Triose phosphate isomerase
Glyceraldehyde 3-phosphate dehydrogenase
C 3 植物的光呼吸作用會顯著降低光合作用效率及作物產量,最可能是因為下列何種化合物的生合成受抑制 ?
2 -磷酸乙醇酸 (2-phosphoglycolate)
ATP 與 NADPH
3-磷酸甘油酸 (3PG)
氧分子
Which of the following descriptions about Crassulaccan acid metabolism (CAM) is not correct ?
The benefit of CAM to the plant is the ability to leave most leaf stomata closed during the day.
During the night, CAM plants allow CO2 to enter and be fixed as organic acids.
During the day, the stomata of CAM plants close to conserve water, and the organic acids stored in the vacuoles of bundle sheath cells are released.
Pineapple is the economically valuable crop possessing CAM.
Cactus utilize the CAM as an adaptation for arid conditions.
In the bundle sheath cells of C4 plants, CO2 can be fixed by ___ and produce ___ during the dark reaction of photosynthesis.
OAA / malate
OAA / PEP
Pyruvate / malate
PEP / malate
RuBP / 3-Phosphoglycerate
下列有關光合作用的敘述中,何者正確?
H+ 是光反應在PSII 的產物
PSI 位在葉綠體的內膜上
Bundle sheath 可見於 CAM 植物
循環式電子流的產物是NADPH
Calvin cycle 中,負責固定CO2 的是 ribulose-1,5-bisphosphate carboxylase
從哪一方面而言,C4 植物與 CAM 植物兩者的光合作用適應是相似的?
正常情況下,兩者的氣孔在白天都關閉
此兩種植物製糖時不需經由 Calvin cycle
兩者均由 rubisco 之外的另一種酵素執行固碳作用的第一步驟
此兩種植物大多在夜間製糖
此兩者的葉綠體內部不含葉綠餅 (grana)
葉綠體在某種可中止氫離子從 ATP synthase complexes 處通過之抑制劑存在的情況下,下列哪一步驟仍發生?
糖的合成
Proton motive force 的產生
Photophosphorylation
Calvin Cycle
NADPH Oxidation
Which of the following reaction step would consume ATP during photosynthesis?
NADP+ → NADPH
Electrons move from higher energy media to the lower ones
CO2 + RuBP (雙磷酸核酮糖) → PGA (磷酸甘油酸)
PGA → PGAL (磷酸甘油醛)
PGAL → Glucose
下列關於葉綠體光系統構造的敘述,何者正確 ?
PS II 的天線色素為類胡蔔蔔素中之葉黃素
組成光體系的光合色素分布於葉綠體內膜及葉綠體囊膜上
PS I 的反應中心是由葉綠素 b 所組成
P680 的光體系在進行 ETC 過程中可產生 NADPH
P700 的光體系僅參與循環電子傳遞的過程
