Explain proteins
Explain proteins in brief? How can protein variety of living beings be demonstrated?
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Proteins are molecules made up of sequences of amino acids bound through a peptide bond. The genetic code codifies 20 different amino acids which can compose proteins. Therefore there are many combinations of amino acid that can form polypeptide chains and for this reason protein molecules can be hugely diverse.
Describe briefly the term frame shift mutation? Is this mutation alike to single-nucleotide polymorphism?
Write down the main structures of human eye?
Explain the term plant cell vacuoles? What are their major functions? Also name the covering membrane of the vacuoles?
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Do all eukaryotic cells contain nucleus and just one nucleus?
Describe briefly about the term ecological succession?
Characterize the birds according to examples of representing beings, skin, basic morphology, respiration, circulation, nitrogen waste, types of reproduction and thermal control?
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How dissimilar are the concepts of emigration, migration and immigration.
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