Posted inunclassified Respiration 1 Posted by By Agodirin October 13, 2024 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 3 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 Created by Agodirin Respiration 1 1 / 50 1. resp15_which of the following is a means of gaseous exchange by animals living in dry habitat A) stomata B) skin C) lung D) gills Lungs: These are specialized organs for gas exchange in terrestrial animals, efficient for dry conditions. Gills: Not suitable for dry habitats since they need water to function. Skin: Some animals (like amphibians) can exchange gases through the skin, but it's not the primary means for most dry-habitat animals. Stomata: These are structures in plants for gas exchange, not animals. 2 / 50 2. resp32_which of the followin gis the voice box A) alveoli B) epiglottis C) pharynx D) larynx The larynx is commonly known as the voice box and is responsible for sound production. Epiglottis: Covers the trachea during swallowing. Pharynx: A passageway for air and food, not the voice box. Alveoli: Sites for gas exchange, 3 / 50 3. resp4_Which of the following is a waste produce of respiration in animals A) carbondioxide B) water C) oxygen D) ATP Carbon dioxide is a waste product produced during the metabolic processes of cellular respiration. Oxygen: This is a substrate in aerobic respiration, not a waste product. ATP: ATP is the energy currency produced, not a waste. Water: While water is produced during respiration, it is not considered a waste product; it is used in many cellular processes. 4 / 50 4. resp45_Which of the following is not present in inspired air A) nitrogen B) oxygen C) carbondioxide D) hydrogen Hydrogen. Explanation: Inspired air typically contains oxygen (21%), carbon dioxide(0.04%, and nitrogen(79%), but negligible hydrogen (0.0005%) hence is not particularly considered. Oxygen: Present in inspired air. Carbon dioxide: Present in small amounts. Nitrogen: The majority component of air 5 / 50 5. resp8_what is the pathway of intake of oxygen from the atmosphere to the body cells A) atmosphere, nostril, trachea, blood, alveoli, cells B) atmosphere, trachea,nostril, blood, alveoli, cells C) atmosphere, nostril, alveoli, trachea,blood, cells D) atmosphere, nostril, trachea, alveoli, blood, cells Atmosphere, nostril, trachea, alveoli, blood, cells. Explanation: This is the correct pathway for inhaling oxygen: it enters through the nostrils, travels down the trachea, reaches the alveoli for gas exchange, enters the blood, and finally reaches the cells. Atmosphere, nostril, alveoli, trachea, blood, cells: Incorrect because the trachea should come before the alveoli. Atmosphere, trachea, nostril, blood, alveoli, cells: Incorrect sequence; nostrils come before the trachea. Atmosphere, nostril, trachea, blood, alveoli, cells: Incorrect because alveoli should come before blood; gas exchange happens in the alveoli, not in the blood. 6 / 50 6. resp46_which of the following is not present in expired air A) chlorine B) oxygen C) nitrogen D) carbondioxide Chlorine is not a component of expired air; the main components are COâ‚‚(4.0%), nitrogen (79%), and some remaining oxygen (16%) 7 / 50 7. resp6_the organ of the body where atmospheric oxygen is taken in and carbondioxide is expelled is A) lung B) skin C) muscle D) liver Lungs are the primary organs for gas exchange in mammals, where oxygen is inhaled and carbon dioxide is exhaled. Liver: The liver processes nutrients and detoxifies substances but is not involved in gas exchange. Muscle: Muscles consume oxygen but do not function as the primary site for gas exchange. Skin: While some amphibians can exchange gases through the skin, it is not the main organ for gas exchange in most animals. 8 / 50 8. resp37_Internal respiration is the respiration inside the cell where food is converted to chemical energy. Which of the following is not correct about the process A) the two types of internal respiration are aerobic and anaerobic B) alcohol is a byproduct of anaerobic respiration C) the chemical energy produced is Carbondioxide D) the substrate for internal respiration are glucose and oxygen The chemical energy produced is Carbon dioxide . Explanation: Carbon dioxide is a waste product of cellular respiration, not the energy produced. The substrate for internal respiration are glucose and oxygen: Correct; glucose and oxygen are used in aerobic respiration. The two types of internal respiration are aerobic and anaerobic: Correct; both processes occur. Alcohol is a byproduct of anaerobic respiration: Correct; in some organisms, anaerobic respiration can produce alcohol 9 / 50 9. resp23_The tracheal system is used for respiration in A) man B) tadpole C) lizard D) grasshopper Grasshoppers use a tracheal system for gas exchange. Tadpole: Uses external gills initially, then lungs as an adult. Lizard: Uses lungs. Man: Uses lungs as well 10 / 50 10. resp44_During experiment to demonstrate respiration in small potted plant, the air coming from the plant jar turned caustic soda(lime water) milky. This suggests that the potted plant A) removed CO2 from the air B) produced oxygen C) produced CoO2 D) removed oxygen from the air Produced COâ‚‚ Explanation: The milky color indicates the production of carbon dioxide, which reacts with lime water. Removed COâ‚‚ from the air: Incorrect; it produced COâ‚‚. Produced oxygen: Incorrect; the experiment demonstrated COâ‚‚ production. Removed oxygen from the air: Incorrect; the focus is on COâ‚‚ 11 / 50 11. resp19_which of the following is used for gaseous exchange in fish A) tracheae B) nostrils C) gill filament D) operculum Gill filament Explanation: Gill filaments are the actual structures where gas exchange occurs in fish. Operculum: A bony flap that covers the gills, not directly involved in gas exchange. Nostrils: Primarily for sensing and intake of water/air, not gas exchange. Tracheae: Found in insects, not in fish 12 / 50 12. resp48_which of the following is not correct about the concentration of air A) hydrogen is 4.0% B) oxygen is 21% C) Nitrogen is 79% D) carbondioxide is 79% hydrogen is not present typically considered present because its negligible about 0.00005% 13 / 50 13. resp49_What is respiratory quotient during respiration A) Respiratory quotient (RQ) is the amount of CO2 produced divided by the amount of O2 consumed for a particular food at a particular time B) Respiratory quotient (RQ) is the amount of CO2 produced multiplied by the amount of O2 consumed for a particular food at a particular time C) Respiratory quotient (RQ) is the amount of CO2 produced mulplied by the amount of glucose consumed for a particular food at a particular time D) Respiratory quotient (RQ) is the amount of CO2 produced divided by the amount of glucose consumed for a particular food at a particular time Respiratory quotient (RQ) is the amount of COâ‚‚ produced divided by the amount of Oâ‚‚ consumed for a particular food at a particular time . . RQ is defined as the ratio of carbon dioxide produced to oxygen consumed during respiration. Glucose is not part of the equation or calculation 14 / 50 14. resp9_the process of exchange of gases (respiration) in amoeba is A) diffusion through booklung B) diffusion through alveoli C) through gill fillament D) diffusion through cell memberane Amoebas exchange gases directly through their cell membrane via diffusion due to their single-celled nature. Diffusion through alveoli: Alveoli are specific to multicellular organisms with lungs, not applicable to amoebas. Diffusion through book lung: Book lungs are structures found in certain arachnids eg spider. Through gill filament: Gill filaments are used in aquatic animals, not in unicellular organisms like amoeba. 15 / 50 15. resp24_which of the following is not part of the tracheal system for respiration A) spiracle B) tracheole C) trachea D) alveoli Alveoli are part of the mammalian respiratory system, not the insect tracheal system. Spiracle: Openings for air to enter the tracheal system in insects. Trachea: Main air tubes in the tracheal system and Tracheole: Smaller tubes that lead to body fluid and cells of insects 16 / 50 16. resp26_During vigorous exercise or workout, the oxygen needed to remove excess build up of lactic acid in muscle is A) oxygen recovery B) latent oxygen C) internal oxygen D) oxygen dept Oxygen debt refers to the extra oxygen required after exercise to metabolize lactic acid. Oxygen recovery, latent oxygen and internal oxygen are not standard term used in physiology 17 / 50 17. resp31_which of the following correctly describes the respiratory tract in mammals A) nostril, pharynx, trachea, larynx, bronchus, bronchioles, alveoli B) nostril, larynx, pharynx, trachea, bronchus, bronchioles, alveoli C) nostril, pharynx, larynx, trachea, bronchus, alveoli, bronchioles D) nostril, pharynx, larynx, trachea, bronchus, bronchioles, alveoli Nostril, pharynx, larynx, trachea, bronchus, bronchioles, alveoli Explanation: This sequence correctly outlines the pathway of air through the mammalian respiratory system.. 18 / 50 18. resp20_in fish, oxygenated water is drawn in through the A) nostrils B) gill raker C) tracheae D) mouth Mouth Explanation: Fish take in water through the mouth, which then flows over the gills for oxygen extraction. Nostrils: Not involved in water intake in fish. Tracheae: Not present in fish. Gill raker: Structures that filter food, not involved in water intake. 19 / 50 19. resp33_the respiratory surface called air sac in mammals is the A) alveoli B) trachea C) bronchiole D) pharynx Alveoli are the air sacs in the lungs where gas exchange occurs. Bronchiole: Airways leading to alveoli, not the site of gas exchange. Trachea: The main airway leading to the lungs. Pharynx: A passageway, not an air sac. 20 / 50 20. resp10_which of the following has a respiratory system A) amoeba B) spirogyra C) hydra D) snail Among the options you provided, snail has a respiratory system. Snails have a respiratory system that includes gills or lungs, allowing them to breathe. Amoeba: Respiration occurs through diffusion across the cell membrane; it does not have a respiratory system. Spirogyra: This is a type of green algae that also relies on diffusion for gas exchange; it does not have a respiratory system. Hydra: Respiration occurs through diffusion as well, with no specialized respiratory system 21 / 50 21. resp38_which of the following is not correct about the breathing mechanism in mammals A) During inspiration the pressure in the thorax and the lung reduces to let in air from the atmosphere when the diaphragm contracts and ascends while the ribcage descends B) During expiration the diaphragm relaxes and ascends while the ribcage descends C) during inpiration air from the atmosphere passes from the nostrils into the pharynx, oesophagus and into the lungs D) During expiration the pressure in the thorax and lungs increase pushing out air During inspiration, air from the atmosphere passes from the nostrils into the pharynx, oesophagus and into the lungs. Explanation: Air passes from the nostrils to the pharynx and then to the larynx and trachea, not the esophagus (which is for food). During inspiration, the pressure in the thorax and the lungs reduces to let in air: Correct; this is how air enters. During expiration, the pressure in the thorax and lungs increases pushing out air: Correct; this is how air is expelled. During expiration, the diaphragm relaxes and ascends while the ribcage descends: Correct; this describes the mechanism of expiration 22 / 50 22. resp43_in simple acquatic plant like spirogyra, the air dissolved in water gets into the cells by A) diffusion through lenticel B) diffusion through spiracle C) diffusion through cell memberane D) diffusion through stomata Diffusion through cell membrane. Explanation: Gas exchange occurs through the cell membrane by diffusion. Diffusion through spiracle: Spiracles are not present in plants, it occurs in insects like grasshopper and cockroach. Diffusion through stomata: Stomata are primarily for terrestrial plants. Diffusion through lenticel: Lenticels are found in some terrestrial plants, not aquatic 23 / 50 23. resp42_Following vigorous exercise with development of oxygen dept, which of the following accumulates in the muscle causing muscle cramps A) ATP B) oxygen C) glucose D) lactic acid Lactic acid accumulates in muscles during anaerobic respiration when oxygen is insufficient. Oxygen: Not accumulated; it's in deficit.ATP: Generally decreases during strenuous activity. Glucose: Not directly related to cramps; it's broken down for energy 24 / 50 24. resp34_which of the following is not involved in respiraiton in man A) diaphragm B) booklung C) rib-cage D) intercostal muscles Book lungs are found in arachnids, not in humans. Diaphragm: Essential for inhalation. Intercostal muscles: Assist in breathing by moving the rib cage. Rib-cage: Protects the lungs and aids in respiration 25 / 50 25. resp41_During an experiment to demonstrate espiration in rat, when the air from the jar containing the rat turns lime water milky, this shows that the rat has expired A) alcohol B) carbondioxide C) oxygen D) ATP Carbon dioxide is expelled during expiration. Lime water turns milky due to the presence of carbon dioxide, which forms calcium carbonate when reacted. Oxygen: Not produced during expiration. ATP: Not a gaseous product; ATP is used for energy. Alcohol: Not produced during respiration in mammals 26 / 50 26. resp40_During aerobic respiration, which of the following correctly represents the overall process of chemical respiration to produce energy from food(glucose) A) C6H12O6 + 6O2 = 6H2O + Energy(38 ATP) B) C6H12O6 + 6O2 =6CO2 + 6H2O + Energy(38 ATP) C) C6H12O6 + 6O2 =6CO2 + Energy(38 ATP) D) C6H12O6 + 6O2 =6CO2 + 6H2O + Energy(2 ATP) C6H12O6 + 6O2 = 6CO2 + 6H2O + Energy (38 ATP). Explanation: This equation accurately represents the process of aerobic respiration, showing the reactants and products. 27 / 50 27. resp35_which of the following correctly describes the mechanism of inhalation (inspiration ) in man A) diaphragm descends, ribcage rises, pressure the thorax increases, air is drawn into lungs B) diaphragm descends , ribcage rises, pressure in the thorax reduces, air is drawn into the lungs C) diaphragm descends , ribcage rises, pressure in the thorax reduces, air is expelled from the lungs D) diaphragm ascends , ribcage widens, pressure in the thorax increases, air is drawn into the lungs Diaphragm descends, ribcage rises, pressure in the thorax reduces, air is drawn into the lungs Explanation: This accurately describes the process of inhalation. 28 / 50 28. resp11_which of the following undergoes direct external respiration by diffusion of carbondioxide and oxygen through the membrane into the organism without posessing a respiratory system A) spider B) hydra C) fish D) snail The organism that undergoes direct external respiration by diffusion of carbon dioxide and oxygen through the membrane, without possessing a specialized respiratory system, is hydra. Snail: Has a respiratory system (gills or lungs). Spider: Uses book lungs or tracheae for respiration. Fish: Uses gills for respiration. Hydra: Respiration occurs through diffusion across its body surface, as it lacks a specialized respiratory system 29 / 50 29. resp50_Which of the following is not a byproduct of internal respiration A) Water B) Oxygen C) Carbondioxide D) ATP Answer: Oxygen. ATP: This is the main product of internal respiration, produced during the conversion of glucose and oxygen into energy. Water: This is a byproduct of aerobic respiration when glucose is metabolized. Carbon dioxide: This is also a byproduct of aerobic respiration, produced when glucose is oxidized. Oxygen: This is not a byproduct; rather, it is a substrate together with glucose used in the process of cellular respiration. 30 / 50 30. resp27_which of the following is not correct about cellular respiration A) in anearobic respiration oxygen is not available for respiration B) during cellular respiration oxygen is used to generate energy as ATP C) cellular respiration occurs in unicellular organisms only D) aerobic respiration generates 38 ATP while anaerobic respiration generates 2ATP Cellular respiration occurs in unicellular organisms only is not correct because cellular respiration occurs in both unicellular and multicellular organisms. During cellular respiration, oxygen is used to generate energy as ATP: This is correct. In anaerobic respiration, oxygen is not available for respiration: This is correct. Aerobic respiration generates 38 ATP while anaerobic respiration generates 2 ATP: This is correct. 31 / 50 31. resp12_which of the following expires carbondioxide and takes in oxygen through the skin A) spider B) fish C) frog D) lizard Explanation: Frogs are amphibians that can respire through their skin in addition to using lungs. This process, known as cutaneous respiration, allows frogs to exchange gases (oxygen and carbon dioxide) directly through their moist skin, especially when they are in water or in humid environments. Lizard: Primarily uses lungs for respiration and does not respire through the skin. Fish: Respire primarily through gills, not the skin. Spider: Uses book lungs or tracheae for respiration, not through the skin. 32 / 50 32. resp39_which of the following is not correct about the process of chemical respiration where food is converted to chemical energy A) Glycolysis occurs in the cytoplasm of the cell B) aerobic respiration produces 38 molecules of ATP as chemical energy while anaerobic respiration produces 2 ATP molecules only C) kreb cycle occurs in the nucleus of the cell D) it occurs in two stages: glycolysis and kreb cycle Kreb cycle occurs in the nucleus of the cell Explanation: The Krebs cycle occurs in the mitochondria, not the nucleus. It occurs in two stages: glycolysis and Kreb cycle: Correct; this is how respiration is structured. Glycolysis occurs in the cytoplasm of the cell: Correct; glycolysis takes place in the cytoplasm. Aerobic respiration produces 38 molecules of ATP while anaerobic respiration produces 2 ATP molecules only: Correct; this is accurate 33 / 50 33. resp16_which of the following are means of gaseous exchange by plants A) lenticel and tracheae B) gills and stomata C) stomata and lenticel D) booklung and stomata Stomata and lenticel Explanation: Stomata: These are openings on the leaves and stems of plants that allow for gas exchange (COâ‚‚ in, Oâ‚‚ out). Lenticel: These are small openings in the bark of woody plants that facilitate gas exchange. Gills and stomata: Incorrect because gills are not found in plants. Book lung and stomata: Incorrect because book lungs are found in some animals like spider, not plants. Lenticel and tracheae: Incorrect because tracheae are respiratory structures in insects 34 / 50 34. resp22_which of the following use external gills for respiration A) lizard B) fish C) grasshopper D) tadpole Tadpoles have external gills for respiration during their larval stage. Grasshopper: Uses a tracheal system, not external gills. Fish: Have internal gills. Lizard: Uses lungs for respiration 35 / 50 35. resp3_Aerobic respiration is the oxidation of food in the presence of oxygen. Which of the following are the products A) ATP, carbondioxide and water B) ATP and oxygen C) ATP, carbondioxide and alcohol D) ATP , water and oxygen Aerobic respiration produces ATP, carbon dioxide, and water as end products. ATP and oxygen: Oxygen is a reactant, not a product. ATP, water, and oxygen: Again, oxygen is not produced; it is consumed. ATP, carbon dioxide, and alcohol: This describes alcoholic fermentation, which occurs in anaerobic conditions, not aerobic respiration. 36 / 50 36. resp7_the part of the lung where oxygen is exchanged for carbondioxide is A) blood vessel B) bronchus C) alveoli D) trachea Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled. Bronchus: These are air passages that lead to the lungs but do not facilitate gas exchange themselves. Blood vessel: While blood vessels transport gases, they are not the site of gas exchange. Trachea: This is the windpipe that conducts air to the lungs but does not participate in gas exchange. 37 / 50 37. resp36_which of the following correctly describes the mechanism of exhalation (expiration ) in man A) diaphragm ascends , ribcage descends, pressure in the thorax reduces, air is expelled from the lungs B) diaphragm ascends , ribcage descend, pressure in the thorax reduces, air is expelled from the lungs C) diaphragm descends , ribcage descend, pressure in the thorax reduces, air is expelled from the lungs D) diaphragm descends , ribcage ascends, pressure in the thorax increases, air is expelled from the lungs Diaphragm ascends, ribcage descends, pressure in the thorax increases, air is expelled from the lungs Explanation: During exhalation, the diaphragm relaxes and moves upward, the ribcage moves downward, which increases thoracic pressure, forcing air out 38 / 50 38. resp30_which of the following prevent food from entering the airway in mammals A) valve B) epiglottis C) alveoli D) larynx The epiglottis is a flap that covers the trachea during swallowing to prevent food from entering the airway. Valve cover the opening of spiracles in insect. Larynx: Involved in sound production, not primarily in preventing food entry. Alveoli: Sites of gas exchange, not involved in swallowing 39 / 50 39. resp47_which of the following is not correct about inspired and expired air A) Both inspired and expired air contain oxygen B) Both inpired and expired air contain carbondioxide C) the concentration of carbondioxide in inspired air is lower than the concentration in expired air D) the concentration of oxygen in inspired air is lower than the concentration in expired air The concentration of oxygen in inspired air is lower than the concentration in expired air Explanation: Inspired air has a higher concentration of oxygen than expired air. Both inspired and expired air contain carbon dioxide: Correct; both have COâ‚‚. The concentration of carbon dioxide in inspired air is lower than the concentration in expired air: Correct; expired air has more COâ‚‚. Both inspired and expired air contain oxygen: Correct; both have oxygen. 40 / 50 40. resp17_which of the following undergoes respiration through the skin and mouth A) earthworm B) lizard C) snake D) frog Frogs can respire through their skin (cutaneous respiration) as well as through their mouth (buccal respiration). This dual method allows them to efficiently exchange gases, especially in aquatic or moist environments. Lizard: Primarily breathes through lungs and does not respire through the skin or mouth. Snake: Also breathes through lungs; snakes do not use their skin for respiration. Earthworm: Respiration occurs mainly through the skin (cutaneous respiration), but not through the mouth. 41 / 50 41. resp5_n the cells, the process by which carbon dioxide is exchanged for oxygen during respiration is by A) osmosis B) diffusion C) active transport D) translocation Gas exchange (Oâ‚‚ for COâ‚‚) occurs via diffusion, where gases move from areas of higher concentration to lower concentration. Osmosis: This specifically refers to the movement of water through a semipermeable membrane, not gases. Active transport: This process requires energy to move substances against a concentration gradient, which is not how gas exchange occurs. Translocation: This term is usually used in the context of nutrient transport in plants, not gas exchange. 42 / 50 42. resp29_which of the following is not part of the respiratory tractin mammals A) spiracle B) mouth C) nostril D) trachea Explanation: Spiracles are openings found in insects, not mammals. Nostril: Part of the respiratory tract in mammals. Mouth: Can also be involved in respiration. Trachea: Part of the respiratory tract. 43 / 50 43. resp1_The chemical energy that is released following oxidation of food is A) ATP B) DNA C) NADH D) O2 ATP (adenosine triphosphate) is the main energy currency of the cell, produced during the oxidation of food. DNA: This is the genetic material and does not function as an energy carrier. NADH: While NADH is an electron carrier produced during cellular respiration, it is not the final energy currency; it is used to generate ATP.Oâ‚‚: Oxygen is a substrate/reactant in aerobic respiration, not a product of oxidation 44 / 50 44. resp2_The process of oxidation of food in the mitochondrium of cell to release energy is A) cellular transpiration B) cellular respiration C) cell reduction D) cellular combustion Cellular respiration is the metabolic process that converts food into usable energy (ATP) in the mitochondria. Cell reduction: This term does not apply to the oxidation of food; it typically refers to a decrease in the oxidation state of a substance. Cellular combustion: While similar, combustion typically refers to burning in the presence of oxygen, which is not the biological process of energy production. Cellular transpiration: Transpiration is related to the movement of water in plants, not the oxidation of food 45 / 50 45. resp21_in fish carbondioxide diffuse out of the body through the A) gill raker B) body surface C) gills D) fins Gills are the primary sites for gas exchange, allowing COâ‚‚ to diffuse out. Fins: Used for movement, not gas exchange. Body surface: Limited gas exchange occurs here but is not significant. Gill raker: Primarily involved in feeding, not gas exchange. 46 / 50 46. resp25_which of the followiing is the respiratory surface in man A) gill B) spiracle C) alveoli D) booklung Alveoli are the sites of gas exchange in the lungs. Spiracle: Not present in humans. Gill: Found in aquatic animals, not in humans. Book lung: Found in some arachnids, not in humans. 47 / 50 47. resp28_which of the following is not correct about comparison of cellular respiration A) aerobic respiration take place in the mitochondrium B) Anaerobic respiration produces more ATP than aerobic respiration C) the two types are aerobic and anaerobic D) Aerobic respiration occurs in the presence of oxygen and anearobic respiration occurs in the absence of oxygen Anaerobic respiration produces less ATP (2 ATP) compared to aerobic respiration (up to 38 ATP). The two types are aerobic and anaerobic. Anaerobic and aerobic respiration take place in the mitochondrion: only aerobic respiration occurs in the mitochondria. Aerobic respiration occurs in the presence of oxygen and anaerobic respiration occurs in the absence of oxygen: This is correct 48 / 50 48. resp14_which of the following is not a means of gaseous exchange by terrestrial animals A) gills B) booklung C) tracheae D) lenticel Gills: These are specialized structures for gas exchange in aquatic animals, not terrestrial ones. Book lung: Found in some arachnids (like spiders), it is a respiratory structure for terrestrial animals. Tracheae: These are tubes in insects for gas exchange, used by terrestrial animals. Lenticel: These are small openings on the stems of plants, but they can also refer to structures in some terrestrial animals for gas exchange 49 / 50 49. resp18_which of the following is a means of gaseous exchange in amoeba A) pyrenoid B) nucleus C) cell membrane D) mitochondrium Cell membrane Explanation: Amoeba exchanges gases directly through its cell membrane via diffusion. Pyrenoid is involved in starch storagem not gas exchange. Nucleus: The control center of the cell, not involved in gas exchange. Mitochondrium: Involved in energy production, not directly in gas exchange. 50 / 50 50. resp13_which of the following does not undergo respiration by diffusion of gases through the skin (cutaneous respiration) A) frog B) earthworm C) ant D) toad Ants are insects that do not respire through their skin. Instead, they have a tracheal system, which consists of a network of tubes that deliver oxygen directly to their cells and remove carbon dioxide. Frog: Can respire through the skin as well as through lungs. Toad: Similar to frogs, toads also can respire through their skin. Earthworm: Respiration occurs through their moist skin; they rely on diffusion for gas exchange. 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