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What are cnidocytes? What is the name of the capsule inside the cnidocyte? What are the biological functions of this structure?
Cnidocytes are specialized cells present in coelenterates. They are found in the epidermis and have toxic substances that can hurt, paralyze or even kill other animals.
Every cnidocyte has an internal capsule know as nematocyst where the actual urticating substance is stored. When a cnidocyte is excited it causes the nematocyst to expose a filament having the toxic chemical.
Cnidocytes and their nematocysts have the biological functions of defending the individual from external aggression and of helping to capture their prey.
VITAMIN - D Also known as Calciferol / Anti ricket vitamin / sun shine vitamin. It is necessary for bones & teeth. It is synthesized in presence of UV rays of sunl
Define Functions of Vitamin D? Vitamin D is required to maintain normal blood levels of calcium and phosphate, which are in turn needed for the normal mineralization of bone, m
Define Points to Remember regarding to Food Processing? 1. Conversion of raw materials and ingredients into acceptable consumer products is referred to food processing, which c
Define Absorption of Dietary Iron? Haem iron is more bioavailable than non-haem iron because it is absorbed intact as a soluble complex by endocytosis (process whereby cells ab
Q. What is the fundamental structure of a virus? Viruses are constituted of genetic material RNA or DNA covered by a protein capsule also known as a capsid. Some viruses, like
Q. What is the kind of life cycle present in pteridophytes? Like all plants pteridophytes present diplobiontic (alternation of metagenesis or generations,) life cycle.
If water dousing, homeopathic cures, and so on work for just me but not for anyone else, it is still science.
Blotting is the technique for detecting one RNA within the mixture of RNAs (a Northern blot) or one type of the DNA within of a mixture of DNAs (a Southern blot). A blot can prove
Q. Different stages involved in feeding patient - peptic ulcer? Stage I: It is characterized by haematemesis (vomiting of blood which may be derived from mouth, stomach, oesoph
After the food intake is over, the food gets digested, assimilated and finally egested through the kidneys and anus. The urinary system: • Filters waste materials from the blood
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