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  • 1/29 Questions

    The process of giving out breath is known as ​​​

    • Inhaling
    • Exhaling
    • Respiration
    • Evaporation
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About This Quiz

Engage in this intriguing Grade 7 science quiz focused on human respiration. Explore how asthma worsens, the mechanics of inhaling, and the transformation of raw materials during respiration.

Quizzzz... Buzz For Grade 7 - Quiz

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  • 2. 

    The process of taking oxygen in is known as ​​​

    • Inhaling

    • Respiring

    • Exhaling

    • Synthesizing

    Correct Answer
    A. Inhaling
    Explanation
    Inhaling refers to the process of taking in oxygen. It involves the intake of air through the nose or mouth, which then travels down the respiratory system into the lungs. Once in the lungs, oxygen is absorbed into the bloodstream and transported to cells throughout the body for various metabolic processes. Therefore, inhaling is the correct term to describe the process of taking in oxygen.

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  • 3. 

    During respiration, oxygen and glucose reacts together to produce carbon dioxide, water and energy.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    During respiration, oxygen and glucose undergo a chemical reaction called cellular respiration. This process occurs in the mitochondria of cells and involves the breakdown of glucose molecules to release energy. Oxygen is used as the final electron acceptor, and carbon dioxide and water are produced as byproducts. This reaction is essential for the production of energy in the form of ATP, which is used by cells for various metabolic processes. Therefore, the statement that oxygen and glucose react together to produce carbon dioxide, water, and energy is true.

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  • 4. 

    The most dangerous disease of respiratory system is ​​​​​​

    • Asthma

    • Flu

    • Cold

    • Cough

    Correct Answer
    A. Asthma
    Explanation
    Asthma is considered the most dangerous disease of the respiratory system because it is a chronic condition that causes the airways to become inflamed and narrow, making it difficult to breathe. Asthma attacks can be triggered by various factors such as allergens, exercise, or respiratory infections. During an asthma attack, the individual may experience wheezing, shortness of breath, chest tightness, and coughing. If not properly managed, asthma can lead to severe complications and even be life-threatening. Unlike the flu, cold, or cough, asthma is a chronic condition that requires ongoing management and treatment.

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  • 5. 

    The ________________in the air we breathe in is used by the body's cells in the process of respiration 

    Correct Answer
    oxygen
    Explanation
    Oxygen in the air we breathe is used by the body's cells in the process of respiration. Oxygen is essential for the production of energy in the cells through a series of chemical reactions known as cellular respiration. During respiration, oxygen is used to break down glucose and other molecules, releasing energy in the form of ATP. This process occurs in the mitochondria of cells and is vital for the functioning of all living organisms.

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  • 6. 

    At the end of each bronchiole is a tiny group of air-sacs called alveoli.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because at the end of each bronchiole, there are indeed tiny air-sacs called alveoli. These alveoli are responsible for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream. They provide a large surface area for efficient gas exchange, allowing oxygen to enter the bloodstream and carbon dioxide to be removed from the body.

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  • 7. 

     Hair in nostrils help to

    • Inhale easily

    • Exhale easily 

    • Clean air from dust

    • Make the air warm

    Correct Answer
    A. Clean air from dust
    Explanation
    The hair in our nostrils serves as a filter to clean the air we breathe from dust particles. When we inhale, the hair traps dust and other particles, preventing them from entering our respiratory system. This helps to keep our lungs and airways clean and free from irritants.

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  • 8. 

     The respiration that does not involve the presence of oxygen is known as

    • Aerobic respiration

    • Anaerobic respiration

    • Passive Respiration

    • Active respiration

    Correct Answer
    A. Anaerobic respiration
    Explanation
    Anaerobic respiration is the correct answer because it refers to the type of respiration that occurs in the absence of oxygen. This process is commonly seen in microorganisms and some types of cells in humans and animals. During anaerobic respiration, glucose is broken down to produce energy in the form of ATP without the need for oxygen. This process produces lactic acid or ethanol as a byproduct.

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  • 9. 

     The respiration that involves the presence of oxygen is known as ​​

    • Aerobic respiration

    • Anaerobic respiration

    • Passive respiration

    • Active respiration

    Correct Answer
    A. Aerobic respiration
    Explanation
    Aerobic respiration is the correct answer because it is the process of respiration that requires the presence of oxygen. During aerobic respiration, glucose is broken down in the presence of oxygen to produce energy in the form of ATP. This process occurs in the mitochondria of cells and is the most efficient way to generate energy. Anaerobic respiration, on the other hand, occurs without oxygen and produces less energy. Passive and active respiration are not accurate terms used to describe respiration processes.

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  • 10. 
     The carbon dioxide is removed from - ProProfs

     The carbon dioxide is removed from

    • Anus as feces

    • Lungs while inhaling

    • Lungs while exhaling

    • Kidneys

    Correct Answer
    A. Lungs while exhaling
    Explanation
    When we inhale, we take in oxygen from the air into our lungs. During the process of respiration, oxygen is used by our cells to produce energy, and carbon dioxide is produced as a waste product. This carbon dioxide is then transported back to the lungs through the bloodstream. When we exhale, the carbon dioxide is expelled from the body through the lungs. Therefore, the correct answer is "lungs while exhaling."

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  • 11. 
    The main cause of 'asthma' is ​​​​​ - ProProfs

    The main cause of 'asthma' is ​​​​​

    • Tobacco smoke

    • Pets

    • Exercise

    • Laughing

    Correct Answer
    A. Tobacco smoke
    Explanation
    Exposure to tobacco smoke is a major cause of asthma. Inhalation of smoke from cigarettes, cigars, or pipes can irritate and inflame the airways, leading to symptoms such as wheezing, coughing, and shortness of breath. The chemicals present in tobacco smoke can also damage the lining of the airways and make them more sensitive to triggers, making it easier for asthma attacks to occur. It is important for individuals with asthma to avoid exposure to tobacco smoke to manage their symptoms effectively.

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  • 12. 

    Glucose+Oxygen--------------------Carbon dioxide+water+energy ( Tissue respiration)

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because during tissue respiration, glucose and oxygen are used by cells to produce carbon dioxide, water, and energy. This process occurs in the mitochondria of cells and is essential for the production of ATP, the energy currency of the cell.

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  • 13. 
     Every single cell of the body requires ​​​ - ProProfs

     Every single cell of the body requires ​​​

    • Oxygen only

    • Food only

    • Carbon dioxide and food

    • Oxygen and food

    Correct Answer
    A. Oxygen and food
    Explanation
    Every single cell of the body requires oxygen and food in order to function properly. Oxygen is necessary for cellular respiration, which is the process that produces energy in the form of ATP. Without oxygen, cells cannot generate enough energy to carry out their functions. Food provides the necessary nutrients, such as carbohydrates, proteins, and fats, that are broken down and used by cells for growth, repair, and energy production. Therefore, both oxygen and food are essential for the survival and proper functioning of every cell in the body.

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  • 14. 

    Each pair of ribs has muscles, called 

    • Intercostal muscles

    • Skeletal muscles 

    • Brachii muscles

    • None of the above

    Correct Answer
    A. Intercostal muscles
    Explanation
    The correct answer is intercostal muscles. Each pair of ribs has these muscles, which are responsible for the movement of the ribcage during breathing. The intercostal muscles play a crucial role in expanding and contracting the chest cavity, allowing for the inhalation and exhalation of air. They are located between the ribs and are classified as skeletal muscles, which means they are under voluntary control.

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  • 15. 
     Flu is caused by ​​ - ProProfs

     Flu is caused by ​​

    • Bacteria

    • Viruses

    • Insects

    • Dust

    Correct Answer
    A. Viruses
    Explanation
    Flu is caused by viruses, specifically the influenza virus. Bacteria, insects, and dust are not responsible for causing the flu.

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  • 16. 

    A human body removes most of the water through ​​​​​​

    • Sweating

    • Breathing

    • Urination

    • Working hard

    Correct Answer
    A. Urination
    Explanation
    The correct answer is urination because the human body eliminates a significant amount of water through the process of urination. When we consume fluids, our body absorbs the necessary nutrients and water, and the excess water is filtered by the kidneys. The kidneys produce urine, which is then excreted from the body through the urinary tract. This process helps maintain the body's water balance and eliminates waste products from the bloodstream. Sweating and breathing also contribute to water loss, but urination is the primary method of removing water from the body.

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  • 17. 

     In respiration, raw material is converted into

    • Water only

    • Carbon dioxide and energy

    • Water and energy

    • Water, carbon dioxide and energy

    Correct Answer
    A. Water, carbon dioxide and energy
    Explanation
    During respiration, the raw material (glucose) is broken down in the presence of oxygen to produce energy. This process is called aerobic respiration. As a result of this process, water and carbon dioxide are released as byproducts, along with the energy that is stored in ATP molecules. Therefore, the correct answer is "water, carbon dioxide, and energy."

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  • 18. 
     When we inhale ​​​​​​ - ProProfs

     When we inhale ​​​​​​

    • The diaphragm is pushed upwards and the rib cage downwards

    • Both diaphragm and rib cage are pushed downwards

    • The diaphragm is pulled downwards and the rib cage upwards

    • The diaphragm is pushed upwards and the rib cage is pulled downwards

    Correct Answer
    A. The diaphragm is pulled downwards and the rib cage upwards
    Explanation
    When we inhale, the diaphragm contracts and moves downward, creating more space in the chest cavity. At the same time, the muscles between the ribs contract, pulling the rib cage upwards and outwards. This combined action of the diaphragm moving downward and the rib cage moving upwards increases the volume of the chest cavity, allowing air to enter the lungs.

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  • 19. 

     In respiration the raw products are ​

    • Oxygen and carbon

    • Oxygen and food

    • Oxygen and glucose

    • Food and carbon

    Correct Answer
    A. Oxygen and glucose
    Explanation
    In respiration, the raw products are oxygen and glucose. Oxygen is required for the process of respiration as it acts as the final electron acceptor in the electron transport chain, allowing for the production of ATP. Glucose is the main source of energy for respiration, as it is broken down through a series of metabolic reactions to produce ATP. Therefore, both oxygen and glucose are essential for the process of respiration.

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  • 20. 
     Cold is caused by - ProProfs

     Cold is caused by

    • Bacteria

    • Viruses

    • Insects

    • Dust

    Correct Answer
    A. Viruses
    Explanation
    Cold is caused by viruses. Bacteria, insects, and dust are not responsible for causing colds. Viruses are the main culprits behind the common cold, as they infect the respiratory system and cause symptoms such as a runny nose, coughing, and sneezing. Viruses can easily spread from person to person through close contact or by touching contaminated surfaces. Therefore, it is important to practice good hygiene, such as washing hands frequently, to prevent the spread of cold viruses.

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  • 21. 

    Which planet in our solar system is known as the "Red Planet"?

    • Venus

    • Jupiter

    • Mars

    • Saturn

    Correct Answer
    A. Mars
    Explanation
    Mars is often called the "Red Planet" because of its reddish appearance, which is due to iron oxide, or rust, on its surface. This distinct color makes it easily recognizable in the night sky. Mars has been a focus of exploration due to its similarities to Earth, and scientists believe that it might have had liquid water and conditions suitable for life in the distant past. Its unique color and intriguing features make it one of the most studied planets in the solar system.

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  • 22. 

    While inhaling, human  take __________ of oxygen into the body.

    • 30%

    • 21%

    • 60%

    • 45%

    Correct Answer
    A. 21%
    Explanation
    During inhalation, humans take in approximately 21% of oxygen into the body. This is because the Earth's atmosphere is composed of approximately 21% oxygen, with the majority being nitrogen. When we breathe in, oxygen from the air enters our lungs and is then transported to our bloodstream, where it is delivered to our cells for various biological processes such as energy production through respiration.

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  • 23. 
    When we exhale ​​​​​ - ProProfs

    When we exhale ​​​​​

    • The diaphragm is pushed up and the rib cage is pushed downwards

    • The diaphragm is pulled down and the rib cage is pushed downwards

    • The diaphragm is pulled down and the rib cage is pulled upwards

    • The diaphragm is pushed upwards and the rib cage is pulled upwards

    Correct Answer
    A. The diaphragm is pushed up and the rib cage is pushed downwards
    Explanation
    During exhalation, the diaphragm, which is a dome-shaped muscle located below the lungs, contracts and moves upwards. This upward movement of the diaphragm reduces the space in the chest cavity, causing the rib cage to move downwards. As a result, the volume of the chest cavity decreases, and the air is pushed out of the lungs. Therefore, the correct answer is that the diaphragm is pushed up and the rib cage is pushed downwards during exhalation.

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  • 24. 

    The light-dependent reactions of ______ occur in the thylakoid membranes of chloroplasts, where light energy is converted into chemical energy in the form of ATP and NADpH.

    Correct Answer
    Photosynthesis, photosynthesis
    Explanation
    Photosynthesis is a complex process that converts light energy into chemical energy in the form of glucose. The light-dependent reactions are the first stage of photosynthesis, where light energy is captured and used to generate ATP and NADPH, which are then used in the light-independent reactions (Calvin cycle) to produce glucose.

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  • 25. 

     Asthma can get worse due to

    • Bacteria

    • Viruses

    • Insects

    • Dust

    Correct Answer
    A. Viruses
    Explanation
    Asthma can get worse due to viruses because viral infections can trigger inflammation in the airways, leading to asthma symptoms. Viruses such as the common cold or the flu can cause respiratory infections that can exacerbate asthma symptoms and make breathing more difficult. This is because the immune response to viral infections can cause the airways to become inflamed and narrow, making it harder for air to flow in and out of the lungs. Therefore, viruses can worsen asthma symptoms and increase the risk of asthma attacks.

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  • 26. 

    Air passes into the body through the ____________

    Correct Answer
    Trachea, Windpipe
    Explanation
    The trachea, also known as the windpipe, is the tube that allows air to pass into the body. It connects the larynx to the bronchi and allows air to flow in and out of the lungs. The trachea is lined with cilia and mucus, which help to filter and moisten the air as it enters the body.

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  • 27. 

     The 'air' that we breath, turns moist, by

    • Hair in nostrils

    • Blood capillaries in nostrils

    • Water in the nose

    • Mucus lining in nostrils

    Correct Answer
    A. Blood capillaries in nostrils
    Explanation
    The correct answer is blood capillaries in nostrils. When we breathe, the air passes through our nostrils, where it comes into contact with the blood capillaries. These capillaries have a high surface area and are filled with warm blood. As the air passes over them, moisture from the blood evaporates into the air, causing it to become moist. This helps to humidify the air before it reaches the lungs, preventing them from drying out.

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  • 28. 

    In the body, ____________ is immediately below the diaphragm.

    Correct Answer
    Liver
    Explanation
    The liver is located immediately below the diaphragm. The diaphragm is a large, dome-shaped muscle that separates the chest cavity from the abdominal cavity. The liver is one of the largest organs in the body and is situated in the upper right quadrant of the abdomen, just below the diaphragm. Its position allows it to receive blood from the hepatic artery and portal vein, and it plays a vital role in detoxification, metabolism, and digestion.

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  • 29. 

    Type description here

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  • Current Version
  • Jan 20, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 07, 2020
    Quiz Created by
    Shining Armor
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