百度试题 结果1 题目Vacuole in a plant cell ( ) A. lacks membrane and contains air B. lacks membrane and contains water andexcretory substances C. is membrane-bound and contains storageproteins and lipids D. is membrane-bound and contains waterand excretory substances....
Plant cell : cell structure 华约tRNA北约 抵制学术垃圾驳斥tRNA的34-35-36号碱基接收信息Plant cells are eukaryotic(真核的) cells that differ in several key aspects from the cells of other eukaryotic organisms. These distinctive features include the following: A large central vacuole(液泡), a water...
Plant cells have high concentrations of molecules dissolved in their cytoplasm, which causes water to come into the cell under normal conditions and makes the cell's central vacuole swell and press against the cell wall. With a healthy supply of water, turgor pressure keeps a plant from wilting...
The primary vacuole functions include maintaining the fluid balance or the internal hydrostatic pressure; exporting the unwanted and toxic substances; acting as a cellular pump; maintaining the cell’s acidic internal pH; and determining relative cell size and even shape, as they can help the cell ...
First demonstration that plant cell walls can extend as a result of hydrolysis by an endoglucanase (fungal, not plant), but with characteristics very different from expansin action. Article CAS PubMed PubMed Central Google Scholar Park, Y. W. et al. Enhancement of growth and cellulose ...
Animal cells are much larger than bacterial cells, with important differences from plant cells. Animal cells, unlike plant cells, do not have (i) an outer rigid cell wall, (ii) a permanent vacuole and (iii) chloroplasts. Note: What is an organelle? An organelle is a specialized part of ...
During programmed cell death, previous live cell imaging studies have observed vacuoles to become simpler in structure and have implicated this simplification as a prelude to the vacuole's rupture and consequent lysis of the plasma membrane. Here, we examined dynamics of the vacuole in cell cycle-...
Like animals, plants contain cells with organelles in which specific metabolic activities take place. Unlike animals, however, plants use energy from sunlight to form sugars during photosynthesis. In addition, plant cells have cell walls, plastids, and a large central vacuole: structures that are no...
DigitalVision/GettyImages Lesson1-1 Aplantcellcontainschloroplasts,whichareorganellesthatmakefood. Unlikeananimal cell,arigidcellwall surroundsaplant cellandhelpsprotect andsupportit. Aplantcellalso containsalarge centralvacuole. Whatisaplant?(cont.) Lesson1-1 Mostplantshaveroots,stems,andleaves. Rootsanc...
nKCBP controls central vacuole formation for symbiosome development Duplication of KCBP, which encodes a plant-specific microtubule-based kinesin motor, occurs solely in legumes of the clade that form symbiosomes. The nodule-enriched KCBP (nKCBP) is co-opted by rhizobia to control central vacuole...