Science Test And Revision - Microbes And The Human Body

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Science Test And Revision - Microbes And The Human Body - Quiz

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Give yourself 30 minutes to do it. . . It contains 45 questions


Questions and Answers
  • 1. 

    How do Viruses reproduce?

    • A.

      A. Budding

    • B.

      B. Invasion

    • C.

      C. Splitting in two

    Correct Answer
    B. B. Invasion
    Explanation
    Viruses reproduce through invasion, which involves the virus invading a host cell and taking control of its cellular machinery. The virus injects its genetic material into the host cell, which then uses the host's resources to replicate the virus. This process eventually leads to the release of new viruses, which can go on to infect other cells and continue the cycle of infection.

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  • 2. 

    Name the types of Microbes, listing the sub categories involed:

  • 3. 

    What are Antibiotics

    • A.

      Chemicals produced by your body

    • B.

      A part of the immune system

    • C.

      A drug given to you to kill bacterias

    Correct Answer
    C. A drug given to you to kill bacterias
    Explanation
    Antibiotics are drugs that are administered to kill bacteria in the body. They are not produced by the body itself, nor are they a part of the immune system. Instead, antibiotics are specifically designed medications that target and eliminate harmful bacteria, helping to treat various bacterial infections.

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  • 4. 

    The only good bacterias are the ones you eat.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement suggests that the only beneficial bacteria are the ones that are consumed through food. However, this is not true. There are many beneficial bacteria that exist naturally in our bodies and contribute to various physiological functions such as digestion, immune system support, and nutrient absorption. These bacteria are not necessarily obtained through food consumption alone. Therefore, the statement is false.

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  • 5. 

    What are microbes used for?

    • A.

      In food Production (cheese, youghurt, bread...)

    • B.

      To help you feel better

    • C.

      To destroy Earth

    • D.

      To make you dizzy

    Correct Answer(s)
    A. In food Production (cheese, youghurt, bread...)
    B. To help you feel better
    Explanation
    Microbes are used in food production such as cheese, yogurt, and bread because they play a crucial role in the fermentation process. They help in breaking down complex substances, such as lactose in milk, into simpler components, which enhances the flavor, texture, and nutritional value of the food. Additionally, certain microbes are beneficial for human health as they aid in digestion, produce essential vitamins, and strengthen the immune system. However, microbes are not used to destroy Earth or make people dizzy, so those options can be ruled out.

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  • 6. 

    The three types of bacteria are

    Correct Answer(s)
    Spiralla, cocci, baccilus
    Cocci, Spiralla, bacillus
    Explanation
    The correct answer is Spiralla, cocci, baccilus, Cocci, Spiralla, bacillus. The answer lists the three types of bacteria in the correct order, starting with Spiralla, followed by cocci, and ending with baccilus. Then, it repeats the same order again, starting with Cocci, followed by Spiralla, and ending with bacillus.

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  • 7. 

    What is the scientific word for germs?

    • A.

      Microbes

    • B.

      Antigens

    • C.

      Pathogens

    Correct Answer
    C. Pathogens
    Explanation
    Pathogens is the correct answer because it is the scientific term used to describe microorganisms, such as bacteria, viruses, and fungi, that can cause disease in a host organism. These harmful microorganisms invade the body and can lead to infections and illness. Understanding pathogens is crucial in the field of medicine and public health, as it helps in developing strategies to prevent and treat diseases caused by these microorganisms.

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  • 8. 

    All microbes can only be seen by an electron microscope

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This statement is false because not all microbes can only be seen by an electron microscope. While some microbes are too small to be seen with a light microscope and require an electron microscope for visualization, there are also many microbes that can be seen with a light microscope. Therefore, it is incorrect to say that all microbes can only be seen by an electron microscope.

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  • 9. 

    What is a formite?

    • A.

      An organ in a microbe

    • B.

      A non living object used my microbes to live

    • C.

      A disease

    Correct Answer
    B. A non living object used my microbes to live
    Explanation
    A formite is a non-living object that is used by microbes to survive. It can be any inanimate object such as doorknobs, utensils, or surfaces that can harbor and transmit infectious microorganisms. These objects act as a medium for the microbes to live on and can play a significant role in the spread of diseases.

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  • 10. 

    How is fungus not a plant

  • 11. 

    What is two benifits of binary fission

  • 12. 

    Protists can produce cyst that are like eggs

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Protists are a diverse group of eukaryotic microorganisms that can reproduce sexually or asexually. Some protists have the ability to produce cysts, which are protective structures that can withstand harsh environmental conditions. These cysts are similar to eggs in the sense that they can remain dormant until favorable conditions arise for the protist to hatch and resume its normal life cycle. Therefore, the statement that protists can produce cysts that are like eggs is true.

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  • 13. 

    Drinking water with protists in it can produce diarrhoea and vomiting

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Drinking water contaminated with protists can lead to gastrointestinal symptoms such as diarrhea and vomiting. Protists are single-celled organisms that can cause infections in humans when ingested. These microorganisms can disrupt the normal functioning of the digestive system, leading to an inflammatory response and the release of toxins that result in symptoms like diarrhea and vomiting. It is important to ensure that drinking water is properly treated and free from any potential contaminants to prevent such health issues.

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  • 14. 

    What is Aerobic Respiration and how is it different to Anaerobic Respiration?

  • 15. 

    How does a vaccination work?

  • 16. 

    Where is the Hyphae located

    • A.

      In the middle of the cell

    • B.

      At the bottom of a fungi

    • C.

      Within the cell wall

    Correct Answer
    B. At the bottom of a fungi
    Explanation
    Hyphae are the branching, thread-like structures that make up the body of a fungus. They are typically found underground or within the substrate on which the fungus is growing. The hyphae extend outwards and downwards, forming a network that allows the fungus to absorb nutrients and water from its surroundings. Therefore, the correct answer is "At the bottom of a fungi."

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  • 17. 

    Who discovered Penicillin?

    • A.

      Robert Koch

    • B.

      Louis Pasteur

    • C.

      Alexander Flemming

    Correct Answer
    C. Alexander Flemming
    Explanation
    Alexander Fleming is credited with the discovery of penicillin. In 1928, while working at St. Mary's Hospital in London, Fleming noticed that a mold called Penicillium notatum had contaminated one of his petri dishes, and it was killing the bacteria around it. This accidental discovery led to the development of the first antibiotic, which revolutionized medicine by effectively treating bacterial infections. Fleming's work laid the foundation for the use of antibiotics in modern healthcare and earned him the Nobel Prize in Physiology or Medicine in 1945.

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  • 18. 

    What are daughter cells?

  • 19. 

    The special dish the is used to grow bacteria is called

    • A.

      The Flemming Dish

    • B.

      The Petri dish

    • C.

      Pasteur's Dish

    Correct Answer
    B. The Petri dish
    Explanation
    The Petri dish is the correct answer because it is a shallow, cylindrical, lidded dish that is commonly used in laboratories to culture bacteria, fungi, and other microorganisms. It was invented by German bacteriologist Julius Richard Petri in 1887 and has since become a standard tool in microbiology. The dish provides a sterile environment for the growth of microorganisms, allowing researchers to study and analyze their characteristics.

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  • 20. 

    Where can bacterias be found?

    • A.

      Everywhere

    • B.

      Only in good growing conditions

    • C.

      On dirty tiems only

    Correct Answer
    A. Everywhere
    Explanation
    Bacteria can be found everywhere because they are a diverse group of microorganisms that can survive in a wide range of environments. They can be found in soil, water, air, and even inside the human body. Bacteria are highly adaptable and can thrive in both good and bad growing conditions. They play important roles in various ecological processes and can be beneficial or harmful to other organisms, including humans. Therefore, the correct answer is "Everywhere."

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  • 21. 

    All microbe cause diseases?

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Not all microbes cause diseases. While some microbes can be harmful and cause diseases, many others are actually beneficial to humans and the environment. For example, certain bacteria in our gut help with digestion and boost our immune system. Additionally, some microbes are used in the production of food and medicine. Therefore, it is incorrect to say that all microbes cause diseases.

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  • 22. 

    Why have microbes flourished for so long?

  • 23. 

    Tinea is a virus

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Tinea is not a virus, but rather a fungal infection. It is caused by various species of fungi and commonly affects the skin, hair, and nails. Tinea infections are contagious and can be transmitted through direct contact with an infected person or indirect contact with contaminated objects. Treatment typically involves antifungal medications.

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  • 24. 

    What are the most important organs and parts of the digestive system?

    • A.

      Pancreas

    • B.

      Lungs

    • C.

      Liver

    • D.

      Small intestines

    • E.

      Windpipe

    • F.

      Large intestine

    • G.

      Stomach

    Correct Answer(s)
    A. Pancreas
    C. Liver
    D. Small intestines
    F. Large intestine
    G. Stomach
    Explanation
    The pancreas, liver, small intestines, large intestine, and stomach are all important organs and parts of the digestive system. The pancreas produces enzymes that help break down food, the liver produces bile which aids in the digestion of fats, the small intestines absorb nutrients from food, the large intestine absorbs water and electrolytes, and the stomach helps to break down food through the secretion of acid and enzymes.

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  • 25. 

    What is the longest organ in the body system?

    • A.

      Large intestine

    • B.

      Small intestine

    • C.

      Doudenum

    Correct Answer
    B. Small intestine
    Explanation
    The small intestine is the longest organ in the body system. It is responsible for the majority of nutrient absorption and digestion. It is around 20 feet long in adults and is divided into three parts: the duodenum, jejunum, and ileum. The length of the small intestine allows for a larger surface area, which enhances the absorption of nutrients into the bloodstream.

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  • 26. 

    What does the Sphinter do?

  • 27. 

    Is liver the heaviest organ?

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The liver is the heaviest organ in the human body. It weighs approximately 3 pounds (1.4 kilograms) and is responsible for various important functions such as detoxification, metabolism, and production of bile. It plays a crucial role in digestion and overall body health.

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  • 28. 

    What is the use of a gall bladder

  • 29. 

    Trachea is another name for the foodpipe

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The given statement is false. The trachea is not another name for the foodpipe. The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi of the lungs. Its main function is to allow air to pass in and out of the lungs during breathing. On the other hand, the foodpipe, also known as the esophagus, is a muscular tube that connects the throat to the stomach and is responsible for carrying food from the mouth to the stomach for digestion.

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  • 30. 

    The small intestine is filled with

    • A.

      Villi

    • B.

      Alveoli

    • C.

      Colon

    Correct Answer
    A. Villi
    Explanation
    The small intestine is filled with villi. Villi are small, finger-like projections that line the inner surface of the small intestine. They increase the surface area of the small intestine, allowing for more efficient absorption of nutrients from digested food. The villi contain blood vessels and lymphatic vessels that help transport the absorbed nutrients to the bloodstream. Therefore, the presence of villi in the small intestine is crucial for the process of digestion and absorption of nutrients.

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  • 31. 

    What is the chemical used by cells to make energy

    • A.

      Enzymes

    • B.

      Glucose

    • C.

      Sulphur

    • D.

      Oxygen

    Correct Answer
    B. Glucose
    Explanation
    Glucose is the correct answer because it is a type of sugar that cells use as a source of energy. Through a process called cellular respiration, glucose is broken down in the presence of oxygen to produce ATP (adenosine triphosphate), which is the main energy molecule used by cells. Enzymes, sulphur, and oxygen are all important in various cellular processes, but glucose is specifically used by cells to make energy.

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  • 32. 

    How much Saliva is produced each day?

    • A.

      50 ml

    • B.

      1L

    • C.

      3L

    • D.

      15ml

    Correct Answer
    B. 1L
    Explanation
    Saliva is an important fluid produced by the salivary glands in the mouth. It helps in the process of digestion, lubricates the mouth, and aids in speech. The correct answer, 1L, suggests that approximately 1 liter of saliva is produced each day. This amount may vary depending on factors such as age, hydration levels, and overall health. However, on average, the human body produces around 1 liter of saliva daily.

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  • 33. 

    The epiglottis is located in your stomcach

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The epiglottis is not located in the stomach. It is a flap of cartilage located at the base of the tongue, near the entrance of the windpipe. Its main function is to prevent food and liquid from entering the airway during swallowing, directing them instead to the esophagus and stomach.

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  • 34. 

    What is the bolus made of?

    Correct Answer
    Food and Saliva
    Explanation
    The bolus is the mass of food that is formed in the mouth when food is mixed with saliva. Therefore, the correct answer is "Food and Saliva" as both are essential components of the bolus.

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  • 35. 

    What does the nasal cavity do?

    Correct Answer
    humidify the air
    Explanation
    The nasal cavity is responsible for humidifying the air we breathe. As air enters the nasal cavity, it passes over the moist surfaces of the nasal mucosa, which helps to add moisture to the air. This is important because dry air can cause irritation and discomfort in the respiratory system. Additionally, the nasal cavity also filters and warms the air, further preparing it for the lungs. Overall, the nasal cavity plays a crucial role in ensuring that the air we inhale is properly humidified and conditioned before reaching our lungs.

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  • 36. 

    The Larynx is your air sacs

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The given statement is incorrect. The larynx is not your air sacs. The larynx, also known as the voice box, is a part of the respiratory system located in the throat. It houses the vocal cords and plays a crucial role in producing sound and aiding in breathing. Air sacs, on the other hand, refer to the small, balloon-like structures present in the lungs where gas exchange occurs.

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  • 37. 

    What is the gas exchange station called

    Correct Answer
    alveoli
    alveolus
    Explanation
    The gas exchange station in the respiratory system is called the alveoli or alveolus. These small, thin-walled sacs are located at the end of the bronchioles in the lungs. They are surrounded by capillaries and are responsible for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream. The large surface area and thin walls of the alveoli allow for efficient diffusion of gases, ensuring that oxygen is taken in and carbon dioxide is expelled effectively.

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  • 38. 

    What is the smallest blood vessels

    • A.

      Veins

    • B.

      Arteries

    • C.

      Cappilaries

    Correct Answer
    C. Cappilaries
    Explanation
    Capillaries are the smallest blood vessels in the human body. They connect arteries and veins and are responsible for the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues. Capillaries have thin walls, which allow for the efficient diffusion of substances. Due to their small size and extensive network, capillaries provide a large surface area for this exchange to occur.

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  • 39. 

    What happens when you breathe in?

    • A.

      Air flows out

    • B.

      Air flows in

    • C.

      Lungs contract

    • D.

      Ribs move up and out

    • E.

      Intercostal muscles contract

    • F.

      Diaphragm contracts and is flattened

    Correct Answer(s)
    B. Air flows in
    D. Ribs move up and out
    E. Intercostal muscles contract
    F. Diaphragm contracts and is flattened
    Explanation
    When you breathe in, the air flows into your lungs. This is facilitated by the movement of the ribs, which move up and out, creating more space in the chest cavity. The intercostal muscles, located between the ribs, contract to further expand the chest cavity. Additionally, the diaphragm, a dome-shaped muscle below the lungs, contracts and flattens, allowing more room for the lungs to expand and fill with air.

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  • 40. 

    Sort this from biggest to smallest; alveoli, Bronchi, bronchiholes

    Correct Answer(s)
    Bronchi, Bronchiholes, Alveoli
    Explanation
    The correct answer is in the correct order from biggest to smallest. The bronchi are larger airways that branch off from the trachea and lead to the bronchioles. The bronchioles are smaller airways that further divide into even smaller passages called alveoli. The alveoli are tiny air sacs where gas exchange occurs in the lungs. Therefore, the correct order is bronchi, bronchioles, and alveoli.

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  • 41. 

    How many Alveoli are there?

    • A.

      500 million

    • B.

      50 million

    • C.

      500

    Correct Answer
    A. 500 million
    Explanation
    There are 500 million alveoli in the human body. Alveoli are tiny air sacs located in the lungs where the exchange of oxygen and carbon dioxide takes place. These air sacs are responsible for facilitating the transfer of oxygen from the lungs to the bloodstream and removing carbon dioxide from the body. The large number of alveoli allows for a greater surface area for efficient gas exchange, ensuring that the body receives an adequate supply of oxygen and gets rid of waste gases effectively.

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  • 42. 

    What are the 4 main components of the air you inhale and exhale?

    • A.

      Nitrogen

    • B.

      Sulphur

    • C.

      Helium

    • D.

      Oxygen

    • E.

      Carbon dioxide

    • F.

      Hydrochloric Acid

    • G.

      Water vapour

    Correct Answer(s)
    A. Nitrogen
    D. Oxygen
    E. Carbon dioxide
    G. Water vapour
    Explanation
    The air we inhale and exhale consists of four main components: nitrogen, oxygen, carbon dioxide, and water vapor. Nitrogen makes up the majority of the air we breathe, comprising about 78% of the atmosphere. Oxygen is the second most abundant component, essential for respiration and sustaining life. Carbon dioxide is a minor component, but still important as it is produced by our bodies during respiration and is necessary for plant photosynthesis. Water vapor is also present in the air, in varying amounts depending on humidity levels.

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  • 43. 

    Cillia lines the whole respiratory system

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Cilia are hair-like structures that line the entire respiratory system, including the nasal passages, trachea, and bronchi. They play a crucial role in protecting the respiratory system by constantly moving in coordinated waves, sweeping mucus and trapped particles out of the airways. This helps to prevent the buildup of debris and potential infections. Therefore, the statement that cilia line the whole respiratory system is true.

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  • 44. 

    What is the Larynx made of?

    Correct Answer
    Flaps of skin
    Explanation
    The larynx is made up of flaps of skin, known as vocal folds or vocal cords. These flaps of skin are located in the throat and play a crucial role in producing sound and speech. When air passes through the larynx, the vocal folds vibrate, creating sound waves that can be shaped into speech by the mouth and tongue. The larynx also helps in protecting the airway by closing off during swallowing, preventing food or liquid from entering the lungs.

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  • 45. 

    You swallow mucus without knowing it

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Swallowing mucus without knowing it is a common occurrence. Mucus is constantly produced by the body to protect and lubricate various organs, including the nose and throat. When excess mucus is produced, it can drip down the back of the throat and be swallowed unconsciously. This process happens naturally and is not something that we are typically aware of.

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