DIRECTION: B. Respiratory organs in plants and animals vary. These organs are specialized to perform an important role in gas exchange. Try to identify the plant and animal organs involved in the process of respiration. Figure 1 shows a leaf cross-section, determine which part of this leaf is used for gas exchange. Then on the other hand, figures 2, 3, 4, 5 and 6 present different animal respiratory organs. Distinguish each organ utilized by animals for respiration. Fig. 1 Fig. 2 Carbon diovide Oxygen Fig. 3 Fig. 4 Epidermis Papula Tachese Spirades Fig. 5 Fig. 6
Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
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