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Minerals and Trace Elements
Oxygen, carbon, hydrogen and nitrogen are the most common elements that make up 96% of the total weight of a mammal. The next most abundant elements are calcium, phosphorus, potassium, sulphur, sodium, chlorine and magnesium. These make up nearly the remaining 4%.
Fifteen additional elements are required but their total combined amount in mammalian body is less than 0.01% of the body weight. Of the known 90 naturally occurring elements how many are essential for life? This is not known for many animals. In humans 26 elements are known to be necessary.
Spinal cord The elongated part of CNS that runs downward in the spinal canal as continuationof medulla oblongata is called spinal cord. The functions of the Spinal Cord are
Products of Cleavage (Morula and blastula) In several cases, the blastomeres in early cleaving stages tend to presume spherical shape like that of the egg earlier than cleava
If a fragment of nucleic acid has a nucleotide sequence TAC can one assert that it is a codon or an anticodon? A nucleic acid having a TAC sequence surely is not tRNA, it is DN
Explain about the Component of Metalloenzymes? Zinc is unique among the trace elements in that it is a part of enzymes for all six Enzyme Commission classes. As a component of
Explain the Physical Methods to Control Microorganisms? The physical methods to control microorganisms involve heat, filtration or radiations. Figure illustrates these methods.
What role did the appearance of the ozone layer play in the evolution of early life on Earth? Ultraviolet radiation from the sun damages DNA, but the development of the ozone l
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Explain about the Oral cavity and alimental-y tract? Various functional changes and decline in secretary function occur in the digestive tract with aging. These include: Or
When coal is heated strongly in absence of air, it forms a strong, porous, dense and coherent mass known as coke. This process of conversion of coal into coke is called carbonzatio
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