Passive Transport of materials across the membrane needs no energy by the cell and it is not helped by the transport proteins. The physical processes via which substances obtain into the cell are:A. Diffusion B. OsmosisDiffusion:
Diffusion is the movement of molecules of any substance from an area of its higher to a area of its lower concentration (that is, down its own concentration gradient) to spread consistently in the dispersion medium on account of their arbitrary kinetic motion.
Rate of diffusion is proportional (directly) to:
a. The concentration of the substance.b. Temperature of the medium.c. Region of the diffusion path.Diffusion is proportional (inversely) to:
a. Size of the substance moleculesb. Molecular weight of the substance moleculec. Distance over which the molecules encompass to diffuse.Osmosis:
It is a special kind of diffusion where the water or solvent diffuses via a selectively permeable membrane from an area of high solvent concentration to an area of low solvent concentration.Role of Osmosis:
a. It aids in absorption of water from the soil through root hairs.b. Osmosis aids in cell to cell movement of water.c. Osmosis aids to build up the turgor pressure that helps in opening and closing of stomata.
Latest technology based Biology Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Cell Membrane homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Cell Membrane, project ideas and tutorials. We provide email based Cell Membrane homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Cell Membrane. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Cell Membrane. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!