Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Driving Force - Mineral Nutrition
Let us now find out what is the driving force involved in protein mediated transport. Many membrane transport proteins allow specific solutes to move across the lipid bilayers. If the transported molecule is uncharged, then the difference in its concentration on the two sides of the membrane, that is its concentration gradient - determines the direction of transport. However, if the solute to be transported carries a net charge, then both its concentration gradient and the total electrical gradient across the membrane influence its transport. For instance, an ion will move across a membrane if there is sufficient electrical gradient across the membrane even if the concentration gradient does not favour such a movement.
In other words, the direction of movement is decided by which of the two forces is steepest. The two gradients together constitute the electrochemical gradient. The gradient can develop in part due to the selective permeability of the membrane. So the related diffusion of cations may be more than anions or vice versa. For example, K+ diffuses out mort rapidly due to differences in electrical gradient than Cl- in the immediate exterior and hence excess of Cl- in the cell gives it a negative charge. In fact, all plasma membranes have electric potentials (Transmembrane potential) across them with inside of the cell more negative compared to the outside. This is due to active transport of ions particularly H+ ions out of the cell. This potential difference allows the entry of positively charged ions into the cell but opposes the entry of negatively charged ions.
what is filter feeding?..
When the chromosomes are depleted of histones they are seem to have a central fibrous 'protein scaffold' or nuclear matrix to which the DNA is attached in loops. Therefo
Explain Neurologic disease For patients with facial nerve palsy alone, oral doxycycline or amoxicillin may be effective. Patients with other neurologic involvement, such as men
What is Phospholipids ? Phospholipids : Phospholipids are similar to triglycerides, except that they contain only two fatty acid, and one or both of the fatty acids have
Technique of Operation : TEE probe is passed in all cases soon after anaesthesia. The initial steps and exposure of mitral valve are done as for open mitral valvotom
Digestion of Nucleic Acids Several nucleases present in the pancreatic juice like RNAase and DNAase digest various nucleic acids- These enzymes are endonucleases which h
Anther Dehiscence and Pollen Transfer Anther Dehiscence Anther dehiscence simply means the release of pollen grains from dry and mature anthers. It involves the rupturi
Which of the following are likely to help conserve soil and prevent erosion?
skeleton of protozoans
Imagine a population evolving by genetic drift in which the frequency of allele K is 0.65. What is the probability that at some point in the future allele K will drift to a frequen
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd