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what is the energy source used in active transport through biological membranesthe energy essential for active transport against the concentration
what are the three main types of passive transportthe three main kinds of passive transport area simple diffusionb osmosis andc
q what is chlorofluorocarbona chemical is some substance that has a definite composition ozone is a chemical which is made up of three particles of
what are differentiations of the cell membranein some types of cells the cell membrane presents differentiations that are essential for the specific
q illustrate uses of f-block elementlanthanides and many of their complexes have received wide industrial applications for example europium
q show chemical properties of thorium metalyou know that actinium and all the actinides are radioactive of these only uranium and thorium are
what are the basic constituents of the cell membranethe cell membrane is produced of lipids proteins and carbohydratesthe membrane lipids are
concerning permeability what type of membrane is the cell membranethe cell membrane is a selectively permeable membrane ie it permits the passage of
q show the process of ion exchange chromatographythe process of ion exchange chromatography is the most important effective and rapid method for the
what is osmotic pressureosmotic pressure is the pressure formed in an aqueous solution by a region of lower solute concentration upon a region of
what is the difference between osmosis and diffusionosmosis is the occurrence of movement of solvent particles in general water from a region of
what is meant by concentration gradient is it correct to refer to concentration gradient of water concentration gradient is the difference of
what is diffusiondiffusion is the spreading of substance molecules from a region where the substance is more concentrated to another region where it
q distribution coefficients of the saltsthe distribution coefficients of the salts of lanthanide elements between organic and water solvents are
concerning their permeability how are membranes classifiedmembranes can be divided as impermeable permeable semipermeable or selectively permeablean
what is a membranemembrane is any delicate sheet that divides one region from another blocking or permitting selectively or completely the passage of
q show the solubility of double saltsthe solubility of double salts of lanthanides such as 2ln n033mg n03224h20 and ln2 s043 na2s04xh20 increases
q extraction of f-block element as all the lanthanides occur together in nature their extraction involves two main steps i separation from
q show the occurrence of the f-block elementapart from promethium which is unstable and is found in traces in uranium ores all the lanthanides
q chemical properties of f-block elementthe lanthanides are silvery-white highly electropositive and reactive metals they all react slowly with cold
q magnetic properties of f-block elementyou have learnt in the preceding unit-that paramagnetism is related with the presence of unpaired electrons
q complexation behaviour of the f-blockions of actinide and lanthanide elements have a strong tendency to form complexes with a variety of oxygen and
what are the main structures within the cell nucleuswithin the cell nucleus the major structures are the nucleolus an optically dense region
q what is standard electrode potentials of lanthanidesthe standard electrode potentials of lanthanides for the half reactionln3 aq 3e
q show the colour of actinides and lanthanides ionsions of actinides and lanthanides are coloured in the solid state as well as in aqueous solution