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The water expulsion vesicle (also known as a contractile vesicle) is an important osmoregulatory organelle in freshwater protists, which are hyperosmotic to surrounding water. Water constantly diffuses into cell and could cause the cell to burst if there wasn't some way to get it out. That is what water expulsion vesicle does. A network of collecting tubules extends throughout cells, and rich supply of mitochondria on the surface of tubules provides energy required to pump water from cytoplasm into the tubules. Tubules dump the water they've collected into water expulsion vesicle, which slowly fills. Once full, vesicle's membrane fuses with the outer plasma membrane creating a pore out of which excess water flows.
Explain the Community ecology of disease? Ebola, hantavirus, bubonic plague, Lyme disease, West Nile virus, rinderpest, and canine distemper virus are all instances of diseases
Energy and protein deficiencies Deficiencies of protein and energy are the most common nutrient deficiencies, which adversely affect production and performance of farm animals
Are protozoans diploblastic or triploblastic ?
Question 1 Write a short note on the following Free Energy Cori cycle Fermentation Pentose phosphate pathway Transamination Allosteric Regulation Qu
a) Name two food additives needed to keep food wholesome, and say what they do. b) Name two food additives (or types of additive) which are not necessary for keeping fo
The Eukaryotic cells have five several DNA polymerases; α, β, γ, δ or ε. The DNA polymerases contained in replication of chromosomal DNA are α and δ. DNA polymerases β or ε are con
peptide bond
Who is Caius Plinius - Taxonomy? Caius Plinius Seconds, also known as Pliny the Elder (23-79 A.D.), a Roman naturalist and scholar, born in Como, mentioned nearly a thousand pl
State about the Neuropsychological assessment Neuropsychological assessment provides information concerning the status of brain function across the life span. It does so primar
Determine Some Guidelines for Cancer Prevention? The guidelines for cancer prevention focus on the following: 1. Include plant-based diet, limiting red meat in particular.
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