本题目来源于试卷: Unity and Diversity A.4 Cell Structure，类别为 IB生物学
[单选题]
Palisade mesophyll c 7dpg9p+meqppu7lkd , 572tskells produce and release5t - mpa g()i-2 /kpwh(kudb jeu7xry6 large amounts of carbohydrates. Which characteris/ 7r2gum j6dua)5 (ktyhe- i x(p-kwbptics would you expect to observe in such cells?
A. a high density of mitochondria and a large central vacuole.
B. a high density of chloroplasts and an extensive Golgi apparatus.
C. a high density of chloroplasts and a large central vacuole.
D. a high density of mitochondria and an extensive Golgi apparatus.
参考答案: C
本题详细解析:
Palisade mesophyll cells are cells in the leaves of plvg8 i0xsbgh r*a-; noy7zhm5 lz(qh/*ants that produce carbohydrates through photosynthesis. Since photosynthesis takes place within chloroplasts, these cells contain a high density of chloroplasts They also contain a large central vacuole, which occupies the space at the center of the cell and helps maintain the turgor pressure in the cell. The position of the central vacuole ensures the chloroplasts will be pushed near the edges of the cell, where they can receive light. Additionally, the vacuole acts as a storage reservoir for water and other nutrients needed for photosynthesis.*b7 mh*h;l(-r5az/oysx8gv 0qi g hzn
Choice A and Choice D are incorrect because mitochondria are the site of aerobic respiration, during which carbohydrates are broken down to produce ATP. Choice D is also incorrect as the Golgi apparatus packages proteins, not carbohydrates, for export, so Choice B is also incorrect.
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