How is digestion executed in the protozoans
How is digestion executed in the protozoans?
Expert
Digestion in protozoans is an intracellular digestion: organic material is internalized and degraded within the cell.
Protozoans get food through phagocytosis and then the food is digested whenever phagosomes fuse with lisosomes in the cell, making digestive vacuoles. The digestive vacuoles give origin to residual bodies which are removed from the cell by exocytosis.
In paramecium the entrance of food in the cell and the excretion of digestive residuals take place at specialized areas of the plasma membrane, the cytostom and the cytopyge, correspondingly.
Are the cells of connective tissue near or far to the others?
Define attenuation? Briefly explain it.
From zygote, pluricellular organisms are formed by the serial mitosis. Would this formation be probable if each cell made by the mitosis had an identical life concerning its antecedent cells? How did evolution solve that difficulty?
Give a brief explanation of biogeochemical cycles.
Give a brief explanation of typical vegetation and typical fauna of tundras.
State the term antigen briefly?
State the types of hypersensitive reactions?
What is meant by the xaxim?
Give a brief description of the term hematopoiesis?
Explain whether monoculture a system contributes to the large biological diversity of an ecosystem.
18,76,764
1959520 Asked
3,689
Active Tutors
1451796
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!