Biology Section 4

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• Secretory granules from the pancreas are pinched off from the maturating face of the Golgi apparatus.
• Glyoxisomes are absent in peas but present in soybeans and are involved in fatty acid conversion.
• Ribosomes and mRNA together form a polysome.
• Chromoplasts give red color to rose petals.
• Secondary lysosomes form after fusion of phagocytic vacuole with Golgi apparatus enzymes.
• Covalent bonds are formed when atoms share electrons to complete their electron shells.
• Carbon is the fundamental element of organic compounds.
• Reactions that combine simple substances to form complex ones are anabolic reactions.
• Water has the same percentage in bacterial and mammalian cells.
• Biochemistry is the branch of biology that studies chemical compounds and processes in living organisms.
• Water contributes the most to the weight of mammalian cells.
• Lipids are organic compounds present in cells.
• Carbon is a tetravalent atom.
• High specific heat capacity of water stabilizes temperature for living organisms.
• Specific heat capacity measures the energy required to raise water’s temperature by 1°C.
• DNA or RNA is a common element in all living things.
• Stomatal movement mechanism is studied in the field of physiology.
• Hydrophobic fats are structural components of biological membranes.
• Insects represent the largest number of species on Earth.
• An aqueous medium facilitates random movement of ions and molecules for favorable reactions.