Question

1-what is the basic structure of a cell 2-what are the three function of the cell membrane 3-what are the three major biological molecules that make up the cell membrane and what are their function 4- what is the purpose of this lab membrane disruption 5- hypothesis

Answer 1

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(2) the cell membrane sorround the cytoplasm of living cell , therefore physically separate the intracellular components from the extracellular components.

- the cell membrane play a role in anchoring the cytoskeleton to provide shape to the cell and in attaching to the extracellular matrix and to other cells to hold them together to form tissue.

- The cell membrane is selectively permeable. Hence able to regulate what Enters and exits the cell, thus facilitate the transport of materials needed for survival.

(3)The three major biological molecules that make up the cell membrane are Lipids, Proteins and Carbohydrates.

-The cell membrane consists primarily of a thin layer of amphipathic phospholipid that spontaneous arrange so that the hydrophilic 'tail' regions are isolated from the sorrounding water while the hydrophilic head region interact with the intracellular cytosol and extracellular faces of the resulting bilayer.

- Lipid layer are generally impermeable to ions and Polar molecules. The arrangement of hydrophilic heads and hydrophobic tails , prevent polar solutes from diffusing across the membrane.

- the cell membrane has large content of protien , typically around 50% of membrane volume.

Protiens molecules are embedded in the lipid bilayer, some of them are called intrinsic proteins and some of them are extrinsic proteins. These protein form channel , receptors on the membrane ,proton pump and carry out respective function.

- another molecules present in the membrane is carbohydrates. Carbohydrates are predominantly glycoprotein with some glycolipids. Carbohydrates are important in the role of cell-cell recognition in eukaryotes.

Hopefully it helps, thanks.