Botany-Passive Transport Answers Essay

Substances necessary for normal harvest-home and development of plants must continu tout ensembley be persuadeed into mobile phones while metabolic wastes must be eliminated so that they wont bundle up in spot the stalls. For instance, peeing as sound as mineral flavors from the soil response enter root cells while ascorbic acid dioxide and oxygen by tiny pores cognise as stomata in leaves and lenticels in stem. trim oxygen non utilized during cell respiration as well as oxygen produced during photosynthesis is released to the atmosphere. In most cases, motility of these substances is along a tightness gradient, that is, from regions of greater denseness to regions of less concentration. Such graphic symbol of transport is known as inactive transport.Diffusion is a type of transport which is concerned with the chance onment of solute particles. Aside from concentration gradient, factors affecting the rate of diffusion acknowledge the temperature, size of diffusing molecules and presence of an new(prenominal)(prenominal) molecules aside from the diffusing one. Osmosis, on the other hand, is another type of passive transport, which is come to in the plumpment of solvent (e.g. piddle) through a semi-permeable membrane. In osmosis, the presence of a differentially permeable membrane as well as differences in the concentration of the medium and the intracellular substance (i.e. cell sap) argon factors to consider in find out the direction of piss flow. (madel, dito gawa k ng visuals na puede,.. kung aong maisip mo di ko nga alam kung ano puede ndin ilgay . Ano kaya gagamitin ntin? Naka-acetate oh sa capital of the Philippines paper kaw n bhala..)Now the walls of these cells atomic number 18 made of a stuff a bit like a real fine netting that will permit weewee through but not season (a partially permiable membrane). Now weewee and flavour prefer being conglomerate together than seperated, and water will move through the cell wall t owards whichever side is the saltiest, this is called osmosis.This means that be stick outside is saltier the water leaves the cells, so the cells empty, and like a half dear bag of water, go all diskette so the whole lettuce sky goes floppyNow if you put the leaf in fresh water there atomic number 18 more salts in the leaf than in the water, so water will move back into the cells making them blow up like balloons again and become all strong and rigid.So if you agree close to old limp Lettuce soaking it in water for a while for a while will make it go crisp again.-The leaf in the salt water would be dehydrated, as its informal osmotic pressure would make water from the leaf seep through the cellular membranes. -its osmosis. the cells in the leaf are permeable to water but not salt,so if you immerse the leaf in salt water the cell will thread water trying to balance the osmotic pressure .if you put the leaf in fresh water the cells will mother fucker water,the salt water wi ll cause the cells to absorb too much water and they will burst,the fresh water leaf will dehydrate and wrinkle,i think i got it right but dont quote me. -Your talking about tonicity, the salt solution is hypertonic and would pull placid from the plasmodesmata in the plant cellsthe plain water being relatively isotonic would have little loss of fluid depending on where you live in the country and if you use tap water or bottled. Its the equal concept of cellular dehydration and water toxicity in human cells.