Tag: cell membrane

Functions of the cell membrane

Functions of the cell membrane

a. Functions of the lipid of the cell membrane: i. The lipid layer in the middle of the membrane is impermeable to the usual water-soluble substances such as ions, glucose. and urea. sat-soluble substances, such as oxygen, carbon dioxide, alcohol, can penetrate this portion of the membrane with ease, ii. The cholesterol in the cell […]

April 28, 2012 | By | Reply More
The structure of a cell membrane

The structure of a cell membrane

Definition The cell membrane, which envelops the cell, is a thin, pliable, elastic structure. Thickness :7.5 to 10 nanometers. Structure Its basic structure is a lipid bilayer interposed with large globular protein molecules. a Lipid of the cell membrane : Composed almost entirely of phospholipids and cholesterol (lipid in nature). Hydrophilic : The phosphate radicle […]

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What are the components or parts of a typical cells

What are the components or parts of a typical cells

A Typical cell consist of two major parts: I. Cell membrane II. Protoplasm a. Nucleus i. Nuclear membrane ii. Nucleolus ii. Nucleoplasm or nuclear sap iv. Chromatin 1. heterochromatic 2. Euchromatin b. Cytoplasm i.organelles 1. Membranous organelles. *          mitochondria *          Endoplasmic reticulum *          Golgi complex *          Lysosomes *          Peroxisomes 2.         Non membranous organelles: * Ribosomes […]

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How does the cell membrane contribute to cell homeostasis

How does the cell membrane contribute to cell homeostasis

Role of the cell membrane in cell homeostasis a.Role of the cell membrane lipid in cell homeostasis i. The lipid layer in the middle of the membrane is impermeable to the usual water-soluble substances, such as ions, glucose, and urea. Fat-soluble substances, such as oxygen, carbon dioxide, alcohol, can penetrate this portion of the membrane […]

April 28, 2012 | By | Reply More
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