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Respiration Test - 7

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Respiration Test - 7
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  • Question 1
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    Which of the following is the most common respiratory substrate?
    Solution
    Glucose is the most common respiratory substrate.Respiratory substrate is just any organic substance that can be broken down in respiration to release energy - so carbohydrates, lipids and proteins essentially.
  • Question 2
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    Which of the following is a reactant in an aerobic respiration?
    Solution
    O2 is a reactant in an aerobic respiration.
  • Question 3
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    Which of the following yields the highest energy per gram?
    Solution
    Fats yield the highest energy per gram. It is 37 J/G.
  • Question 4
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    Why is aerobic respiration more advantageous than anaerobic respiration?
    Solution
    A major advantage of aerobic respiration is the amount of energy it releases. Without oxygen, organisms can just split glucose into two molecules of pyruvate. This releases only enough energy to make two ATP molecules. With oxygen, organisms can break down glucose all the way to carbon dioxide. This releases enough energy to produce up to 38 ATP molecules.
  • Question 5
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    Which of the following are the different steps of aerobic respiration?
    Solution
    Glycolysis, Krebs cycle and terminal oxidation are the different steps of aerobic respiration.
  • Question 6
    1 / -0
    Respiration in plants
    Solution
    Respiration in plants is a characteristic of all living cells.
  • Question 7
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    Which of the following is required by both respiration and photosynthesis?
    Solution
    Cytochromes are required by both respiration and photosynthesis. They are hemeproteins containing heme groups and are primarily responsible for the generation of ATP via electron transport.
  • Question 8
    1 / -0
    Anaerobic respiration of yeast and certain bacteria is termed as:
    Solution
    Fermentation is a metabolic process that converts sugar to acids, gases or alcohol. It occurs in yeast and bacteria, and also in oxygen-starved muscle cells, as in the case of lactic acid fermentation.
  • Question 9
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    Which of the following organic acids was produced by fermentation?
    Solution
    Lactic acid is produced by fermentation.It is a metabolic process that converts sugar to acids, gases or alcohol.
  • Question 10
    1 / -0
    Both respiration and photosynthesis require
    Solution
    Both respiration and photosynthesis require cytochromes.
  • Question 11
    1 / -0
    The process of breakdown of carbohydrates to produce CO2, water and energy is called
    Solution
    The process of breakdown of carbohydrates to produce CO2, water and energy is called respiration.
  • Question 12
    1 / -0
    Which of the following prevents collapsing of trachea?
    Solution
    Cartilaginous rings prevents collapsing of trachea.
  • Question 13
    1 / -0
    Why do mammalian lungs have numerous alveoli?
    Solution
    Mammalian lungs have numerous alveoli for increasing the surface area for gaseous diffusion.
  • Question 14
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    Which of the following prevents entry of food in the windpipe?
    Solution
    The epiglottis is a flap that is made of elastic cartilage tissue covered with a mucous membrane attached to the entrance of the larynx. It prevents entry of food in the windpipe.
  • Question 15
    1 / -0
    Which of the following respires through gills?
    Solution
    Prawn respires through gills.Gills usually consist of thin filaments of tissue, branches, or slender, tufted processes that have a highly folded surface to increase surface area
  • Question 16
    1 / -0
    Why does heavy exercise cause muscle cramps?
    Solution
    Due to formation of lactic acid, muscle cramps are caused after heavy exercise.
  • Question 17
    1 / -0
    Windpipe is also known as
    Solution
    Trachea is called a windpipe.It is a wide, hollow tube that connects the larynx (or voice box) to the bronchi of the lungs. It is an integral part of the body's airway and has the vital function of providing air flow to and from the lungs for respiration.
  • Question 18
    1 / -0
    The trachea is prevented from collapsing due to the presence of
    Solution
    The trachea is prevented from collapsing due to the presence of cartilaginous rings.
  • Question 19
    1 / -0
    Contractions of the external intercostal muscles bring about
    Solution
    Contractions of the external intercostal muscles bring about increase in the volume of thoracic cavity.
  • Question 20
    1 / -0
    During injury and infection, rate of O2 consumption
    Solution
    During injury and infection, rate of O2 consumption increases to meet the oxygen demand over that area .
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