Factors Affecting Investment Banking Industry

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Definition and Factors Affecting Gas Exchange

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Definition of Gas Exchange

• Gas exchange is the biological process through
  which different gases move.
• They move across respiratory surfaces to
  different parts of the body of a living organism.
  
• It occurs through diffusion when gases move from
  areas of high concentration to those of low
  concentration.
• Gas exchange is essential for facilitating
  different cellular, respiratory and metabolic
  activities in the body.

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How gas exchange occurs in different organisms

• Different gases must dissolve in body fluids
  first .
• They are then transported across the membranes
  and being diffused to surfaces of lower air
  concentration.
• Therefore gaseous exchange can only take place in
  moist environments.
• Exchange systems must have the required fluid
  too.

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Singular Celled Organisms

• They have the fastest gaseous exchange rate.
• This is because air only travels through the cell
  membrane.
• It reduces the distance through which gas
  exchange has to occur.
• It also increases surface area hence improving
  blood circulation.
• There are four main factors that affect gas
  exchange in both animals and plants.

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Surface Area Of The Membrane

• The larger the surface area of the membrane the
  higher the rate of gas exchange that takes place.
• There is a directly proportional relationship
  between surface area and gas exchange .
• This is because when the surface area is large
  more blood and air are able to circulate hence
  increasing the rate of gas exchange.

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Concentration Gradient

• Concentration gradient is only possible when a
  membrane separates two surface areas with
  different concentration of gases.
• The difference is what actually facilitates the
  process of gas exchange.
• This is because the gases are able to move from
  areas of high concentration to those of lower
  concentration.

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Thickness of the membrane

• The rate of gaseous exchange process is also
  affected by the thickness of the membrane.
• This is through which the gases have to diffuse.
• A thicker membrane reduces the rate at which
  gases diffuse.
• This is from areas of higher concentration to
  those of lower concentration.
• This is an inversely proportional relationship

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The Distance of Diffusion

• It is the distance across which air and blood or
  plasma fluids have to travel to diffuse.
• In singular celled organisms gaseous exchange
  tends to be faster.
• This is because the gases only have to diffuse
  through one cell membrane.
• Complex creatures gas exchange requires complex
  transportation and respiratory system.
• This is because the gases are transported through
  a longer distance.

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