the need for cellular respiration

• why do living organisms need to respire?

  The energy formed from respiration is immediately used to synthesize molecules of ATP. ATP in cells can be hydrolysed to release energy in order to drive biological processes
• what is respiration?

  Respiration is the process that occurs in living cells and releases the energy stored in organic molecules like glucose.
• why do living organisms need energy?

  Energy is the capacity to work; the energy that is stored in complex organic molecules is chemical potential energy. when this energy is released from an organic compound, it can be used to make ATP and drive biological processes.
• What are some examples of biological processes that ATP is used in?

  Active transport

  endocytosis

  exocytosis

  synthesis of larger molecules

  DNA replication

  cell division
• what is the definition of metabolism?

  All the chemical reactions take place within a living cell are known collectively as metabolism or metabolic reactions.
• what is an anabolic reaction?

  Anabolic reactions are metabolic reactions where large molecules are synthesised from smaller molecules.
• What is a catabolic reaction?

  Catabolic reactions are metabolic reactions that involve the hydrolysis of larger molecules to form smaller ones.
• what is ATP in terms of respiration?

  ATP is the standard intermediary between energy releasing and energy consuming metabolic reactions in both eukaryotic and prokaryotic cells.
• describe the structure of ATP.

  Three phosphate groups, one adenine, and one ribose sugar
• ATP is relatviely stable when in solution in a cell, but it is readily hydrolised by enzyme catalysis. however whilst in solution, it can be easily be moved from place to place within a cel.