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Similar to all animal cells, protozoans are covered by a plasma membrane which surrounds cytoplasm of the cell, protozoan's integument or skin. Like all membranes, it's permeable; water and low molecular weight substances dissolve in it. Oxygen, is required for metabolism, and metabolic wastes which are generated by metabolism, diffuse across the surface, giving plasma membrane respiratory and excretory functions. Nucleus, with its nucleolus and chromosomes, contains genetic material and would be involved in providing copies of itself for new cells, reproductive system. Golgi apparatus, rough endoplasmic reticulum, and lysosomes which they produce, fuse with ingested food vacuoles, phagosomes.
Q How do cells get energy for their functioning? Cells get energy for their metabolic reactions from the breaking of organic molecules with high energetic content. This energy
Protease inhibitors (PIs) Protease inhibitors prevent cleavage of protein precursors essential for HIV maturation, infection of new cells and viral replication. Use of a prote
Structure of the Vascular Cambium This meristem, in the anatomical sense of the term usually includes two histologically distinct kinds of cells: i) Fusiform Initials, i
What is Sporocyst? Specify. A stage in the life cycle of trematode flukes. Sporocyst develops from the mericidium found in intermediate host. Every sporocyst contains the germ
Q. How are gases exchanged in sponges? The gas exchange in sponges happens by diffusion from the exterior to the cells that absorb molecular oxygen and liberate carbon dioxide.
Coelenterata – General characters and classification.
Q. What is the epidemiological association between hemophilia and HIV infection? In the past the blood banks did not usually perform HIV detection tests and many hemophilic pat
Directional or progressive selection is the mode of selection associated with environmental change. We said earlier that in an unchanging environment stabilising selection removes
Define Precautions for Quantitative Determination of Viable Microbes? 1. Dilution should be made carefully. 2. Use fresh sterile pipette for making each dilution. 3. Asep
Erysipeloid A zoonosis called erysipelas in animals, rose disease in pig, erysipaloid in man is caused by Erysipelothrix rhusiopathiae (insidiosa). Other names given to this co
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