Plasma membrane is a lipoproteinous and trilaminar membrane. It regulates the exchange of materials between the cystosol and extra-cellular medium. Give the reasons for the following:
(a) What do you mean by lipoproteinous and trilaminar nature of plasma membrane?

Plasma membrane is a lipoproteinous and trilaminar membrane. It regulates the exchange of materials between the cystosol and extra-cellular medium. Give the reasons for the following: (b) Phospholipids are called amphipathic molecules. Why?

Plasma membrane is a lipoproteinous and trilaminar membrane. It regulates the exchange of materials between the cystosol and extra-cellular medium. Give the reasons for the following: (e) Enlist two differences bewteen passive and active transport.

Plasma membrane is a lipoproteinous and trilaminar membrane. It regulates the exchange of materials between the cystosol and extra-cellular medium. Give the reasons for the following: ( C ) Why the plasma membrane is said a selectively permeable membrane?

What is the nature of plasma membrane ?

What is the difference between the plasma membrane and cell wall? Give the functions of each one.

These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Purple cabbage jleaves do not lose their colour in cold water but do so in boiling water. Reason:Plasma membrane becomes impermeable in boiling water ariid pigments come out.

Give one term for a semifluid ground substance present between plasma membrane and nucleus.

These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Plasma membrane is a permeable membrane. Reason:Both solute and solvent can pass through semipermeable membrane.

A colloidal solution is a type of mixture which consists of particles whose size varies between 1 and 1000 nanometres. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions. Properties of colloids and their variation are a well-known area ever since the primitive age. The best example to prove their familiarity with us is that we know from very early times that coagulation of milk results in the formation of curd. Physical properties of colloids 1. The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases : • Dispersed medium Dispersed phase. 2. Despite the fact that colloidal dispersions are unlike in description (nature), yet the dispersed fragments are not detectabJe by the human eye. This is due to the microscopic size of the particles in the solution. 3. The colour of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer ifthe size of the particle is large. 4. As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters. Give the name of membrane used for filteration ?