explain what cellular level organization means

The molecules of various chemical substances in a specific proportion become organised into protoplasm - the physical basis of life. The protoplasm gets organised into cells, which represents the structural and functional unit of life. A living organism may have a single cell (unicellula..

One of the main characteristics used in defining grades of animal complexity is the presence or absence of tissues. Tissues are the aggregations of embryologically and morphologically similar cells that become arranged to perform specific functions. The protozoans occur as single cells or colonies ..

Introduction - At the molecular level all the different types of cells in living organisms are composed of certain chemical substances. The structure and function of the cell and its components are dependent on the molecular structure, arrangement and properties of these chemica..

Introduction - At the molecular level all the different types of cells in living organisms are composed of certain chemical substances. The structure and function of the cell and its components are dependent on the molecular structure, arrangement and properties of these chemica..

>Body fat - There is redistribution of fat to deeper parts of the body from the skin. In women, fat is generally stored in the hips and thighs, while in men it is stored in the abdominal area. Retention of water - The capacity of body cells to retain water decreases. This makes the skin dry and wri..

Summary - Both living organisms and non-living matter are composed of some basic elements and are bound by the same physical laws. However, living organisms differ from non-living matter in some specific aspects. Living organisms exhibit a kind of organisation from mol..

It takes places within the cells of an organism. biochemical processes involved in respiration break down the substate to release energy in the tissues within the cells of the organism. Thus it is called cellular respiration. Gaseous exchange in plants takes place..

- The bio-chemical processes involved in respiration which break down the substrate to release energy take place in the tissues within the cells of an organism. Thus, this is called the cellular respiration. Gaseous exchange in earthworm takes place through its skin. The skin..

Summary - Cellular respiration is the step-wise oxidation of food molecules in a cell using oxygen, producing CO 2 and water and releasing energy, which is stored in ATP for later use. Cellular respiration may be aerobic or anaerobic. The initial steps constituting glycolysis ar..

>DNA molecule is composed of two polynucleotide chains that are coiled around each other. Each chain has nucleotides of adenine, guanine, cytosine and thymine. The structural details of the DNA molecule are very well explained by the double helix model proposed by Watson and Crick. The mo..