Book A Ch 2 Spelling/Vocabulary Test

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Quizzes Created: 54 | Total Attempts: 39,325
Questions: 10 | Attempts: 60

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Book A Ch 2 Spelling/Vocabulary Test - Quiz


Do not captialize words or make any plural. If the vocabulary is two words put only one space inbetween the words. Review your answers before submitting. All answers are final.


Questions and Answers
  • 1. 

    Strand of hereditary material surrounded by a protein coating

    Explanation
    A virus is a microscopic infectious agent that consists of a strand of hereditary material, either DNA or RNA, surrounded by a protein coating. It is not considered a living organism because it cannot reproduce or carry out metabolic functions on its own. Viruses rely on a host cell to replicate and cause infections in plants, animals, and humans. The genetic material of the virus is responsible for instructing the host cell to produce more copies of the virus, leading to the spread of the infection.

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  • 2. 

    Microscope that has two sets of lenses, objective lenses and eyepiece lenses (3 words)

    Explanation
    A compound light microscope is a type of microscope that utilizes two sets of lenses, objective lenses and eyepiece lenses. The objective lenses are located near the specimen and provide magnification, while the eyepiece lenses are positioned near the observer's eye and further enhance the magnified image. This arrangement allows for higher magnification and resolution compared to other types of microscopes.

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  • 3. 

    Allows certain materials to move into and out of the cell (2 words)

    Explanation
    The cell membrane is a crucial structure that allows certain materials to move into and out of the cell. It acts as a selectively permeable barrier, regulating the passage of substances such as ions, nutrients, and waste products. This is achieved through various mechanisms such as diffusion, facilitated diffusion, and active transport. The cell membrane plays a vital role in maintaining homeostasis and enabling communication between the cell and its environment.

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  • 4. 

    Directs all cell activities

    Explanation
    The nucleus is responsible for directing all cell activities. It contains the cell's genetic material, including DNA, which provides instructions for the cell's functions. The nucleus controls the synthesis of proteins and regulates gene expression, allowing it to coordinate and control all cellular activities. Additionally, the nucleus plays a crucial role in cell division, as it is involved in the replication and distribution of genetic material to daughter cells. Therefore, the nucleus is the central control center of the cell, directing and regulating all its activities.

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  • 5. 

    A group of similar cells that work together to perform a certain function

    Explanation
    Tissue refers to a group of similar cells that work together to perform a certain function. Tissues can be found in various parts of the body and are responsible for carrying out specific tasks. They are organized into different types, such as epithelial, connective, muscle, and nervous tissues, each with its own unique structure and function. Tissues play a crucial role in maintaining the overall functioning and structure of organs and systems within the body.

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  • 6. 

    Organelles where energy is released from food molecules

    Explanation
    Mitochondria are organelles responsible for releasing energy from food molecules through a process called cellular respiration. During cellular respiration, mitochondria convert glucose and other nutrients into ATP, the main energy currency of cells. This process occurs in the inner membrane of the mitochondria, where enzymes and electron transport chains are located. Therefore, mitochondria are correctly identified as the organelles where energy is released from food molecules.

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  • 7. 

    Organelles that digest food molecules and wastes inside the cell

    Explanation
    Lysosomes are organelles that are responsible for digesting food molecules and waste materials inside the cell. They contain enzymes that break down these substances into smaller components, which can then be used for energy or eliminated from the cell. Lysosomes play a crucial role in maintaining the cell's overall health and functioning by removing unwanted materials and recycling nutrients.

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  • 8. 

    Group of organs working together to perform a certain function (2 words)

    Explanation
    An organ system is a group of organs that work together to perform a specific function in the body. Each organ within the system has a unique role, but they all collaborate to achieve a common goal. The organs within an organ system have a specialized structure and function that enables them to carry out their specific tasks efficiently. This coordination and integration between organs allow the body to maintain homeostasis and perform essential functions necessary for survival and overall well-being.

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  • 9. 

    Moves materials around inthe cell (2 words)

    Explanation
    The endoplasmic reticulum is a cellular organelle that plays a crucial role in the movement of materials within the cell. It is a network of membranes that extends throughout the cytoplasm and is involved in the synthesis, modification, and transport of proteins and lipids. The endoplasmic reticulum acts as a transportation system, allowing molecules to be moved from one part of the cell to another. It is responsible for the proper sorting and distribution of proteins and lipids to their respective destinations within the cell, ensuring the overall functioning and organization of cellular processes.

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  • 10. 

    Protects the plant cell (two words)

    Explanation
    The cell wall is a protective layer that surrounds plant cells. It provides structural support and helps to maintain the shape of the cell. Additionally, the cell wall acts as a barrier, preventing the entry of harmful substances and protecting the cell from mechanical damage. It is composed of cellulose and other complex carbohydrates, which give it strength and rigidity. Overall, the cell wall plays a crucial role in safeguarding the plant cell and ensuring its proper functioning.

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