Question

Osmosis questions...

Answer 1

1. in the diagram .
2. A membrane that is permeable to the small molecules of water and certain solutes but does not allow the passage of large solute molecules. This term is preferred to semipermeable membrane when describing membranes in living organisms.
3. (i) 15 small molecules are presenton the left side. (ii) 28 small molecules are present on the right side.
4. On the right side.
5. The membrane is selectively permeable because substances do not cross it indiscriminately. Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot.
6. In the second picture.
7. Because there is more conc.entration of smaller mol.ecules on the right side i.e. there is high pres.sure and mol.ecules flow from high pres.sure to low pre.ssure .
8. "N.et movement" is a way of des.cribing the "final" or "total" am.ount of mo.vement taking place, although neither of these ter.ms are su.fficient to tru.ly des.cribe things in the sa.me way the term "n.et" does.
9. "Diffusion" is the gradual move.ment/disp.ersion of conce.ntration within a body, due to a conc.entration gradi.ent, with no net mov.ement of matter. An exa.mple of a process where both bu.lk motion and diffu.sion occur is hum.an bre.athing.

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Answer 2

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❥︎ What is Energy?

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❥︎ In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

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