Mastering Biology: Cytology Quiz With Answers

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Mastering Biology: Cytology Quiz With Answers - Quiz

Do you understand Cytology well in Biology? Take this Cytology quiz with answers, and see how much you know about Cytology. Cytology is basically the examination of a single cell type, often found in the specimen of fluid. This is mainly used for diagnosing cancer. Go for this quiz, and test your knowledge. This quiz will help you practice and enhance your knowledge. Hopefully, you get a perfect score on this quiz. Do share the quiz with other medical people.

Cytology Questions and Answers

  • 1. 

    Phospholipid bi-layer that surrounds the cell and controls the movement of particles into and out of the cell.

    Explanation
    The plasma membrane is a phospholipid bi-layer that surrounds the cell and controls the movement of particles into and out of the cell. It acts as a barrier, regulating the passage of molecules and ions, allowing the cell to maintain its internal environment and communicate with the external environment. The phospholipid bi-layer consists of hydrophilic heads that face outward towards the aqueous environment, and hydrophobic tails that face inward, creating a selectively permeable barrier. This structure allows the plasma membrane to control the movement of substances, ensuring the cell's survival and proper functioning.

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  • 2. 

    Fluid component in which the organelles are suspended.

    Explanation
    Cytoplasm is the correct answer because it is the fluid component in which the organelles are suspended. The cytoplasm is a gel-like substance that fills the cell and surrounds the organelles, providing a medium for their movement and interaction. It also contains various molecules and nutrients necessary for cellular processes.

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  • 3. 

    The control center of the cell and contains genetic material. (DNA/RNA)

    Explanation
    The nucleus is the control center of the cell and contains the cell's genetic material, which is either DNA or RNA. It is responsible for regulating the cell's activities and storing the instructions for cell growth, reproduction, and function. The nucleus is surrounded by a nuclear membrane, which separates it from the rest of the cell and allows it to protect and organize the genetic material. Inside the nucleus, the DNA or RNA is organized into structures called chromosomes. Overall, the nucleus plays a crucial role in maintaining the cell's integrity and controlling its functions.

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  • 4. 

    The site of rapid RNA production.

    Explanation
    The nucleolus is responsible for the rapid production of RNA. It is a distinct region within the nucleus of a cell where ribosomal RNA (rRNA) synthesis takes place. The nucleolus contains specialized structures called nucleoli, which are involved in the assembly of ribosomes. Ribosomes are essential for protein synthesis, and their production requires a high amount of RNA. Therefore, the nucleolus serves as a site for rapid RNA production, making it the correct answer.

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  • 5. 

    Which organelle is primarily responsible for ATP production in eukaryotic cells?

    Explanation
    The mitochondrion is known as the "powerhouse of the cell." It is responsible for producing ATP (adenosine triphosphate), which is the energy currency of the cell, through a process known as cellular respiration.

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  • 6. 

    Non-membranous organelle located within the rough ER and is the actual site of protein synthesis.

    Explanation
    Ribosomes are non-membranous organelles found within the rough endoplasmic reticulum (ER) and are responsible for protein synthesis. They are the actual site where proteins are assembled by linking amino acids together. Ribosomes can also be found in the cytoplasm and mitochondria. Their main function is to translate the genetic information encoded in mRNA into a specific sequence of amino acids, forming a protein molecule. Therefore, ribosomes play a crucial role in the production of proteins, which are essential for various cellular processes and functions.

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  • 7. 

    Processing, packaging, and distribution of substances made by the ER.

    Explanation
    The Golgi apparatus is responsible for the processing, packaging, and distribution of substances made by the endoplasmic reticulum (ER). It receives proteins and lipids from the ER, modifies them, and packages them into vesicles for transport to their final destinations within the cell or for secretion outside the cell. This organelle plays a crucial role in the sorting and directing of molecules to different parts of the cell, ensuring that they reach their intended targets and perform their functions effectively.

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  • 8. 

    The organelle that is the site of ATP synthesis.

    Explanation
    Mitochondria are the site of ATP synthesis. They are often referred to as the "powerhouses" of the cell because they produce the majority of the cell's energy in the form of ATP (adenosine triphosphate). Through a process called cellular respiration, mitochondria convert nutrients into ATP, which is used as a source of energy for various cellular activities. Mitochondria have an inner membrane that contains enzymes and proteins necessary for ATP synthesis, making them the primary location for this important cellular process.

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  • 9. 

    Vesicles that contain hydrolytic enzymes are:

    Explanation
    Lysosomes are organelles within cells that contain hydrolytic enzymes. These enzymes are responsible for breaking down waste materials, cellular debris, and foreign substances. Lysosomes play a crucial role in cellular digestion and recycling. They are involved in processes such as autophagy, where they degrade damaged organelles and recycle their components. Lysosomes also aid in the destruction of pathogens that enter the cell. Overall, lysosomes are vital for maintaining cellular homeostasis and proper functioning.

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  • 10. 

    Non-membranous organelle that forms mitotic spindle fibers

    Explanation
    Centrioles are non-membranous organelles that play a crucial role in cell division by forming the mitotic spindle fibers. During mitosis, centrioles replicate and migrate to opposite poles of the cell, where they organize the spindle fibers. These fibers are responsible for separating the duplicated chromosomes, ensuring that each daughter cell receives a complete set of genetic material. Centrioles are typically found in pairs and are composed of microtubules. While not enclosed by a membrane, they are essential for proper cell division and are found in most animal cells, but not in plant cells.

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  • 11. 

    Liquid-filled sacs that are used for storage of various organic and inorganic compounds are the ____________.

    Explanation
    Vesicles are small, liquid-filled sacs that are used for the storage of various organic and inorganic compounds. They are commonly found in cells and play a crucial role in transporting and storing molecules within the cell. Vesicles are formed by the membrane of the cell and can contain a variety of substances, such as enzymes, hormones, and neurotransmitters. They are important for maintaining cellular homeostasis and facilitating cellular processes such as secretion, exocytosis, and endocytosis.

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  • 12. 

    The ___________supports the microscope.

    Explanation
    The base of a microscope is a crucial component that provides stability and support to the entire instrument. It is the bottom part of the microscope that rests on the surface and keeps the microscope steady during use. Without a solid and stable base, the microscope would be prone to wobbling or falling, making it difficult to use effectively. Therefore, the base supports the microscope and ensures that it remains steady while observing specimens.

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  • 13. 

    The rotating mechanism at the base of the head carries the objective lenses.

    Explanation
    The rotating mechanism at the base of the head is called the nosepiece. It is responsible for carrying the objective lenses of a microscope. The nosepiece allows the user to easily switch between different objective lenses, which have varying magnification powers. By rotating the nosepiece, the user can select the desired objective lens and adjust the magnification level of the microscope.

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  • 14. 

    The eyepiece of the microscope that magnifies 10X is the___________ lens.

    Explanation
    The term "ocular" refers to the eyepiece of a microscope, which is the part through which the viewer looks. It is responsible for magnifying the image produced by the objective lens, typically by a factor of 10X. The ocular is an essential component of the microscope that allows the viewer to observe the specimen in greater detail.

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  • 15. 

     A structure that holds slides in place.

    Explanation
    Stage clips or stage clip are used to hold slides in place on a microscope stage. They are typically made of metal and have a spring mechanism that allows them to securely grip the slide. This prevents the slide from moving or shifting during observation or analysis under the microscope. The stage clips ensure that the slide remains in the correct position, allowing for accurate and precise examination of the specimen on the slide.

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  • 16. 

    Adjustable lens system that permits the use of a scanning, a low-powered lens, high-powered, or an oil immersion.

    Explanation
    The objective lens is a crucial component of a microscope that is responsible for gathering and focusing light from the sample being observed. It is designed with an adjustable lens system that allows for the use of different lenses depending on the desired magnification level. This flexibility enables the microscope to accommodate various imaging techniques, such as scanning, low powered, high powered, or oil immersion, depending on the specific requirements of the observation.

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  • 17. 

    Small substage lens that concentrates the light on the specimen (rack and pinion knob) Regulates the amount of light passing through.

    Explanation
    The condenser with iris diaphragm is the correct answer because it is responsible for regulating the amount of light passing through the specimen. The condenser is a lens that concentrates the light on the specimen, and the iris diaphragm allows for precise control over the amount of light that reaches the specimen. By adjusting the iris diaphragm, the user can optimize the lighting conditions for better visibility and clarity of the specimen under the microscope.

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  • 18. 

    Vertical portion of the microscope connects the base and head.

    Explanation
    The arm of a microscope is the vertical portion that connects the base and the head. It provides support and stability to the microscope, allowing it to stay in an upright position. The arm also helps in adjusting the height and angle of the head, allowing the user to position the microscope comfortably for viewing.

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  • 19. 

    Used to achieve a rough focus on the specimen

    Explanation
    The coarse adjustment knob is used to focus on the specimen. It allows for larger, more rapid adjustments to the focus of the microscope. By turning the course adjustment knob, the distance between the objective lens and the specimen can be adjusted, bringing the specimen into focus. This knob is typically used first to bring the specimen into view, and then the fine adjustment knob is used for more precise focusing.

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  • 20. 

    Used for precise focusing once coarse focusing has been completed.

    Explanation
    The fine adjustment knob is used to make precise adjustments to the focus of an object once the coarse focusing has been completed. It allows for small, incremental changes to the focus, ensuring that the object is sharply and accurately focused. This knob is typically used in microscopy or other scientific instruments where precise focusing is required.

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Stephen Reinbold |PhD (Biological Sciences) |
Biology Instructor
Stephen Reinbold has a PhD in Biological Sciences and a strong passion for teaching. He taught various subjects including General Biology, Environmental Science, Zoology, Genetics, and Anatomy & Physiology at Metropolitan Community College in Kansas City, Missouri, for nearly thirty years. He focused on scientific methodology and student research projects. Now retired, he works part-time as an editor and engages in online activities.

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  • Current Version
  • Apr 16, 2024
    Quiz Edited by
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    Expert Reviewed by
    Stephen Reinbold
  • Oct 10, 2010
    Quiz Created by
    Vbakkar

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