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Flexi answers - Explain the problems that growth causes for cells . . . If a cell grows too large, it may not be able to access its DNA quickly or efficiently enough to support its increased size Exchange of Materials: Cells take in nutrients and expel waste through their surface As a cell grows, its volume increases much more rapidly than its surface area
How do plant cell divide without centrioles? - Biology Stack Exchange Most plants do not have centrioles, so what organelle enables them to multiply? There are many different ways to make a spindle in plant cells: Mitotic spindles may be organized at centriolar centrosomes (only in final divisions of spermatogenesis), polar organizers (POs), plastid MTOCs, or nuclear envelope MTOCs (NE-MTOCs)
1. 25: Plant growth—patterns, limitations and models Growing cells have 'softer' cell walls, i e , walls that yield (expand) at lower pressures than non-growing cells And it is believed that plants control cellular growth by controlling the 'softening' of cell walls
Why Cells Divide Instead of Just Growing Larger As a cell grows, its volume increases faster than its surface area, challenging the cell’s ability to efficiently exchange materials with its environment The cell membrane, which facilitates nutrient uptake and waste expulsion, becomes less effective as the cell enlarges
The plant cell cycle: Pre-Replication complex formation and controls During development, plant cells often modify their classical cell cycle and undergo endoreduplication events that allow them to increase their ploidy level (Sugimoto-Shirasu and Roberts, 2003) However, the consequences of this modified cell cycle for plant development are not completely understood
How Light Deprivation Affects Plant Health And Growth Many non-woody plants rely almost exclusively on water pressure or turgor within their cells to keep them erect In hot and dry conditions, plants can lose water faster than it is being absorbed, and the dehydrated, collapsing cells can no longer remain erect, causing the plant to wilt You may want to see also
The Limit that Stops Our Cells from Growing - Medium The Hayflick limit defines how many times our cells can replicate It applies to everything except stem cells - and it's important for keeping us from developing cancer
Growth and Allocation | SpringerLink Leaves of plants grown with a limiting N supply are smaller, compared with those of plants grown with an optimum nutrient supply, predominantly due to an effect on meristem size and cell number (Fig 10 2B; Terry 1970) How are the changes in biomass allocation pattern brought about?
Plant cell | Definition, Characteristics, Diagram | Britannica A plant cell is the basic unit of all plants Plant cells, like animal cells, are eukaryotic, meaning they have a membrane-bound nucleus and organelles Their characteristic cell wall is composed of cellulose, and they contain chloroplasts for photosynthesis