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Super Cooling - Temperature Relations in Animals
Super cooling is a phenomenon where body water is allowed to cool far below 0°C without formation of ice. Glycerol is effective in lowering both the freezing point and also the super cooling point. In addition, glycerol improves the tolerance to freezing in animals that tolerate ice formation. In some animals antifreeze compounds are found. For example in the Antarctic fish Trematomous borchgrevinki the blood contains a glycoprotein that acts as an antifreeze substance.
Morphogenetic Movements Gastrulation is a dynamic process including a variety of coordinated movements of cells of dissimilar areas of the blastula. The movements of cells in
What are cilia and flagella? Cilia and flagella are structures found in prokaryotes as well in eukaryotic cells. They play defense, nutrition and movement roles for the cell. I
What is Respiratory System explain their functionality ? The respiratory system is responsible for the transport of oxygen and carbon dioxide from outside the body to and from
Q. Are there aquatic and flying mammals? Sirenians (dugongs, manatees) and Cetaceans (whales, dolphins) are aquatic mammals Chiropterans (bats) are flying mammals.
Features of the Gastrulation The significant features of the gastrulation are: a) Proteins of many new types that were not present in the egg or blastula begin to be synthe
Q. What is the name of an RNA sequence that codifies one amino acid? Each sequence of three nitrogen-containing basis of RNA that codifies one amino acid is called a codon. The
Explain Deficiency diseases due to vitamin C? Vitamin C deficiency in human's results in the disease called scurvy, whose symptoms include hemorrhaging (especially in the gums)
Neo-zoonoses In recent times, some of the pre-existing low profile and less frequent zoonoses and some entirely newly recognized zoonoses are emerging with a new dimension. Th
Q. International Codes used for system of binomial nomenclature? In 1753 Linnaeus suggested a system of binomial nomenclature where each individual is denoted by two epithets,
Alfred Sturtevant and Seymour Benzer's studies of recombination in both Drosophila and bacteriophage demonstrated which of the following? A. The gene is an indivisible unit and
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