Biology Section 4

  • 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.

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