Bacteria Quiz Science 6b

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Bacteria Quiz Science 6b - Quiz

Questions about the Moneran Kingdom (Archeabacteria and Eubacteria for some).
Includes key vocabulary like decomposer, flagella, conjugation, binary fission, and producer.


Questions and Answers
  • 1. 

    Some bacteria have a whip-like tail called flagella that helps them ____________________.

    • A. 

      Transport food in and out of the cell

    • B. 

      Absorb food

    • C. 

      Make food

    • D. 

      Move

    • E. 

      All the above

    Correct Answer
    D. Move
    Explanation
    Some bacteria have a whip-like tail called flagella that helps them move. Flagella are long, thread-like structures that rotate like a propeller, allowing bacteria to swim through liquids or move on solid surfaces. This movement is important for bacteria to find nutrients, escape harmful environments, or locate suitable conditions for reproduction. Therefore, the flagella play a crucial role in the locomotion of bacteria.

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  • 2. 

    A form of asexual reproduction where the cell doubles in size and divides into two identical cells with the same hereditary material is called __________________.

    • A. 

      Aerobes

    • B. 

      Binary fission

    • C. 

      Sloshing

    • D. 

      Decomposer

    • E. 

      Secondary fusion

    Correct Answer
    B. Binary fission
    Explanation
    Binary fission is a form of asexual reproduction where a cell doubles in size and then divides into two identical cells with the same hereditary material. This process is commonly observed in prokaryotes, such as bacteria, where the cell undergoes DNA replication and then splits into two daughter cells. This allows for rapid reproduction and population growth in these organisms.

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  • 3. 

    Which is not a basic shape of bacteria?

    • A. 

      Round

    • B. 

      Rod

    • C. 

      Wedge

    • D. 

      Spiral

    • E. 

      None of the above

    Correct Answer
    C. Wedge
    Explanation
    The term "wedge" does not refer to a basic shape of bacteria. Bacteria can have various shapes such as round (coccus), rod (bacillus), and spiral (spirillum/spirochete). Therefore, "none of the above" would also be a correct answer as it encompasses all the shapes mentioned in the options.

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  • 4. 

    Which of the following bacteria cell structures are not found in plant cells?

    • A. 

      Cytoplasm

    • B. 

      Flagella

    • C. 

      Cell wall

    • D. 

      Cell membrane

    • E. 

      None of the above

    Correct Answer
    B. Flagella
    Explanation
    Flagella are not found in plant cells. Flagella are long, whip-like structures that are used by bacteria for movement. They are made up of protein and are used to propel the bacteria through their environment. Plant cells do not have flagella, as they have other structures such as cilia or specialized cells for movement.

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  • 5. 

    Which is not true about bacteria?

    • A. 

      All have cytoplasm in them

    • B. 

      Some are multi-celled

    • C. 

      Don't have a nucleus (prokaryotic)

    • D. 

      Some can live without oxygen

    • E. 

      They can be harmful and helpful to humans

    Correct Answer
    B. Some are multi-celled
    Explanation
    The statement "some are multi-celled" is not true about bacteria. Bacteria are unicellular organisms, meaning they are made up of only one cell. They do not have specialized cells or tissues that make up a multicellular organism. Bacteria are typically single-celled organisms that can exist as individual cells or form colonies. They are prokaryotic, meaning they lack a nucleus and other membrane-bound organelles. Bacteria can be found in various environments and can have both harmful and helpful effects on humans.

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  • 6. 

    How can bacteria help us clean up Earth?

    • A. 

      It rots dead organic material

    • B. 

      It makes new bacteria

    • C. 

      It makes cheese taste good

    • D. 

      It doesn't help

    • E. 

      None of the above

    Correct Answer
    A. It rots dead organic material
    Explanation
    Bacteria can help us clean up Earth by rotting dead organic material. Bacteria are decomposers that break down dead plants and animals, returning nutrients to the soil. This process, known as decomposition, helps to recycle nutrients and maintain a healthy ecosystem. Without bacteria, dead organic material would accumulate and cause pollution. Therefore, bacteria play a crucial role in the natural cleaning and recycling processes of the Earth.

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  • 7. 

    If you were a scientist studying bacteria, where could you go to find them?

    • A. 

      Hot springs

    • B. 

      The ocean floor

    • C. 

      Your bathtub or shower

    • D. 

      A swimming pool

    • E. 

      All the above

    Correct Answer
    E. All the above
    Explanation
    As a scientist studying bacteria, you could find them in hot springs, the ocean floor, your bathtub or shower, and even in a swimming pool. Bacteria are known to thrive in various environments, including extreme conditions like hot springs and the deep sea. They can also be found in more common places like household water sources such as bathtubs and showers, as well as in swimming pools. Therefore, all of the mentioned options provide potential sources for studying bacteria.

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  • 8. 

    Decomposers are able to breakdown materials to be used by other organisms.

    • A. 

      True

    • B. 

      False

    Correct Answer
    A. True
    Explanation
    Decomposers play a crucial role in the ecosystem by breaking down dead organic matter into simpler forms such as nutrients and minerals. These decomposed materials are then recycled and made available for other organisms to use as a source of energy and nutrients. This process is essential for the overall functioning and balance of the ecosystem. Therefore, the statement "Decomposers are able to breakdown materials to be used by other organisms" is true.

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  • 9. 

    Animals and plants are made up of prokaryotic cells.

    • A. 

      True

    • B. 

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because animals and plants are made up of eukaryotic cells, not prokaryotic cells. Prokaryotic cells are found in bacteria and archaea, which are single-celled organisms that lack a nucleus and other membrane-bound organelles. In contrast, eukaryotic cells have a nucleus and other membrane-bound organelles, and they make up the cells of animals, plants, fungi, and protists.

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  • 10. 

    Which is not a unicellular organism?

    • A. 

      Euglena

    • B. 

      Human

    • C. 

      Penicillin

    • D. 

      Paramecium

    Correct Answer
    B. Human
    Explanation
    A unicellular organism is an organism that consists of only one cell. Euglena, paramecium, and penicillin are all examples of unicellular organisms. However, humans are multicellular organisms, meaning they are composed of multiple cells. Therefore, the correct answer is human.

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  • 11. 

    Which kingdom contains the smallest living organisms?

    • A. 

      Plantae

    • B. 

      Fungi

    • C. 

      Monera (Archeabacteria or Eubacteria)

    • D. 

      Animalia

    Correct Answer
    C. Monera (Archeabacteria or Eubacteria)
    Explanation
    Monera (Archeabacteria or Eubacteria) is the correct answer because it is the kingdom that contains the smallest living organisms. Monera includes bacteria, which are single-celled organisms that are generally smaller in size compared to organisms in other kingdoms such as plants, fungi, and animals.

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  • 12. 

    Which are not true about bacteria?  You may choose more than one answer.

    • A. 

      Multi-celled

    • B. 

      Some are round

    • C. 

      Single-celled

    • D. 

      They are autotrophic or heterotrophic

    • E. 

      All can make us sick

    Correct Answer(s)
    A. Multi-celled
    E. All can make us sick
    Explanation
    Bacteria are single-celled organisms, not multi-celled. Some bacteria are round in shape. Bacteria can be either autotrophic or heterotrophic, meaning they can produce their own food or rely on other sources for nutrition. While some bacteria can cause illnesses, not all bacteria have the ability to make us sick.

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  • 13. 

    How is a bacteria cell different than an animal cell?

    • A. 

      It has a cell wall

    • B. 

      It is prokaryotic

    • C. 

      The genetic material floats around in the cytoplasm within the cell

    • D. 

      Some have flagella that allow them to move

    • E. 

      All the above

    Correct Answer
    E. All the above
    Explanation
    A bacteria cell is different from an animal cell in multiple ways. Firstly, it has a cell wall, which provides structural support and protection. Secondly, bacteria cells are prokaryotic, meaning they lack a nucleus and other membrane-bound organelles. The genetic material in bacteria cells floats around in the cytoplasm within the cell, unlike animal cells where it is contained within a nucleus. Additionally, some bacteria cells have flagella, which enable them to move. Therefore, all the given options are correct and differentiate a bacteria cell from an animal cell.

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  • 14. 

    We call some bacteria producers because they produce ____________________.

    • A. 

      Sound

    • B. 

      Light

    • C. 

      Milk

    • D. 

      Their own food

    • E. 

      All the above

    Correct Answer
    D. Their own food
    Explanation
    Bacteria are called producers because they have the ability to produce their own food through the process of photosynthesis or chemosynthesis. Unlike animals, which rely on consuming other organisms for energy, bacteria are able to synthesize organic compounds from inorganic substances, such as sunlight or chemical compounds. This ability to produce their own food makes bacteria self-sufficient and independent in terms of their energy needs.

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  • 15. 

    The reproduction process that increases the number of bacteria cells is called ____________________.

    • A. 

      Autotrophy

    • B. 

      Conjugation

    • C. 

      Binary fission

    • D. 

      Heterotrophy

    • E. 

      Cellular respiration

    Correct Answer
    C. Binary fission
    Explanation
    Binary fission is the correct answer because it is the process by which bacteria reproduce and increase their numbers. In binary fission, a single bacterium divides into two identical daughter cells. This process allows bacteria to rapidly multiply and colonize new environments. Autotrophy refers to the ability of an organism to produce its own food, while heterotrophy refers to obtaining nutrients from other sources. Conjugation is a form of genetic exchange between bacteria. Cellular respiration is the process by which cells convert nutrients into energy.

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