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Algal or Planktonic Fish Poisonings: Fish poisoning can result from the ingestion of fish or shellfish that have fed upon algae toxic to human beings. Paralytic shellfish poisoning is caused by ingestion of shellfish such as scallops, clams and mussels, which have consumed toxic dinoflagellates. Symptoms appear within 10min after ingestion and include gastrointestinal distress, parasthesia of the lips and fingertips followed by ataxia, muscular non-coordination and ascending paralysis. Death may occur within 2 to 12 hours from cardiovascular collapse or respiratory failure. The human lethal dose of toxin is considered to be 3 to 4 mg.
What are the positions of actin and myosin molecules in the sarcomere before and during the muscle contraction? Schematically actin filaments attached perpendicularly to both s
Composition of Oral Rehydration Salt (WHO Standard Formulation) 1. Sodium Chloride (common salt) = 3.5 g 2. Glucose = 20 g 3. Trisodium Citrate = 2.9 g or sodium bicarbon
What are enzyme cofactors? Some enzymes require other associated molecules to work. These molecules are known as enzyme cofactors and they can be, for example, organic ions lik
What best describes the amoebas division? (1) It is a Mode of asexual account in which a one parent is involved. The amoeba cell, which is unicellular, separates into two daug
Ecology and Ecosystem The concepts of environment, ecology, ecosystem, energy flow and nutrient cycling in the foundation course on Science and Technology. As you are aware ec
The parasite completes a part of its life histroy in man in two stages. They are : a) Pre-Erythrocytic cycle. b) Erythrocytic cycle. 1. When an infected female Anopheles mosquit
Q. How mineral salts participate in osmotic regulation? Osmotic pressure depends not on the nature of such particles and on the number of particles dissolved in a solution. Min
Q What are some examples of tissues and organs where mitosis is more frequent, less frequent or practically absent? Generally in vertebrates mitosis is more frequent in tissues
Factors affecting lipid oxidation Temperature In general, the rate of oxidation increases as the temperature is increased. Temperature also influences the relation betw
ERRORS IN FERTILIZATION - 1. Polyspermy - When more than one sperms are fused in an ovum, this condition is called polyspermy. 2. Polygynae - During oogen
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