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Q. How is digestion performed in protozoans?
Digestion in protozoans is intracellular digestion organic material degraded inside the cell and is internalized.
Protozoans get food by phagocytosis and then the food is digested when phagosomes fuse with lisosomes within the cell, forming digestive vacuoles. The digestive vacuoles give basis to residual bodies that are eliminated from the cell by exocytosis.
In the paramecium the entrance of food into the cell and the excretion of digestive residuals occur at specialized regions of the plasma membrane, the cytopyge and the cytostom, respectively.
Define Absorption, Transport and Excretion - Calcium? Calcium (Ca) in food occurs as calcium salts e.g. calcium phosphate or is associated with other dietary constituents e.g.
State the definition of soil The definition of soil has changed a great deal from a thin "outer layer of Earth's crust" to "a collection of natural bodies on the surface of th
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Biological Valves : Biological valves are available for all positions. For mitral position they are usually mounted on a stent (stent mounted) whereas for aortic position they ma
The initial evaluation of new onset heart failure should include an electrocardiogram, chest radiograph, and B-type natriuretic peptide assay. The cardiac rhythm may be normal sinu
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Explain the term Protoderm? The protoderm is one of the so-called "primary tissues" because it is formed first during germination and subsequent plant growth. The protoderm g
Q. Nutrient requirement during angina pectoris? The nutrient requirement here is the same as discussed earlier, however, to sum up it can be said that we need to restrict calor
Define Growth Studies for studying Nutrient Requirement? Nutrient requirements of infants and young children are estimated by studying the rate of growth of healthy children an
Important Modern viral diseases By extensive use of vaccination and chemotherapy. Certain serious viral diseases of the past. Like smallpox. Have been completely or largely e
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