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Answer:
10.a)muscular force
b)kinetic energy
c)gravitational force
11.Electrorefining refers to the process of using electrolysis to increase the purity of a metal extracted from its ore (compound or mixture of compounds from which a metal can be extracted commercially). The anode, positive electrode, is the impure metal to be purified.
Kindly see the attached file for the Diagram.
12.
a)Properties:- (1) Cell membranes are thin enclosures that form closed boundaries. (2) Cell membranes are made up of lipids, proteins and carbohydrates. (3) Cell membranes consists of a phospholipid bilayer. (4) Cell membranes are held together by non-covalent interactions (5) Membranes are fluid-like structure.
Functions:- The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
b)Flexible nature of plasma membrane is useful for amoeba.It helps it in engulfing food by allowing it to form psedupodia(false-feet). The process is phagocytosis. the flexible nature of plasma membrane helps in engulfing food by allowing it to form pseudopodia (False feet).
Explanation:
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