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Unit 1: Cell Structures and Functions (7th Grade ...

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  • The vacuoles in plant cells are different from the vacuoles in animal cells because -
    plant cell vacuoles are typically larger.
  • What shape are plant cells?
    rectangular
  • Trees, birds, and bacteria are all similar because they are all formed from -
    cells that carry out similar life functions present in all cells
  • The picture shows the skeleton of a snake. Which level of organization is represented by the skeleton of a snake?
    organ system
  • The combinations of a heart, arteries, veins, and capillaries is --
    organ system
  • Is cytoplasm only found in animal cells?
    No. Cytoplasm is a gel like liquid found in both plant and animal cells that holds cell components and dissolves waste.
  • What are the three components of cell theory?
    1. all organisms are made of cells, 2. cells are the basic unit of life, 3. all cells come from preexisting cells
  • The picture shows a cross-section of a plant stem viewed through a microscope. Y is involved in creating support for the plant. Which level of organization is best represent by region Y?
    Tissue, a collection of cells working together for a common purpose
  • According to cell theory, what is a similarity of all unicellular and multicellular organisms?
    both are composed of cells
  • Which organelle requires light in order to perform its function?
    Chloroplast, because it performs photosynthesis with its light absorbing pigments
  • Do animal cells have a nucleus?
    Yes
  • Do plant cells have a nucleus?
    Yes
  • Unlike animal cells, plant cells contain a -
    cellulose based cell wall that makes these cells sturdy
  • What shape are animal cells?
    Round
  • Do animal cells have a cell wall?
    No
  • According to cell theory, all living organisms are made of-
    cells, and all have similar needs, such as a source of energy
  • The picture shows layers of skin with object R marked on the surface layer of skin. The level of organization best represented by R is -
    a cell
  • Which level of organization is best represented by each type of muscle in the picture?
    tissue
  • Do animal cells have a cell membrane?
    Yes
  • The diagram shows characteristics of a dandelion flower and a desert lizard. The portions in the diagram that overlap show characteristics that both organisms share. What characteristic belongs at X?
    composed of cells, as stated by cell theory
  • What is a mitochondrion?
    a membrane bound organelle that produces energy
  • The picture shows an object found in nature. Which level of organization is best represented by the object in the picture?
    Organism
  • The diagram shows a cross-section of a flower with the pistil and stamen labeled. The pistil and stamens are involved in seed formation. Using this information, it can be concluded that the pistil and stamens are -
    organs, part of a plant's organ system
  • The picture shows a microscopic view of a blood sample. The structure labeled X can be classified as -
    a cell, the lowest level of organization in a living organism
  • Xylem tubes, which carry water and minerals from the roots of a tree to its leaves would be classified as --
    organ system
  • What organelle is represented here? What does it do?
    Mitochondrion, found in plant and animal cells and makes cellular energy
  • Do plant cells have a cell wall?
    Yes
  • Which organelle, found in plant and animal cells, can store wastes and protect the cell from contamination?
    vacuole
  • The organelle that is involved in supporting the other organelles within the cell is called -
    cytoplasm
  • The picture show structure X that is involved in filtering human fluids to remove toxins. Which level of organization is X?
    Organ
  • Which membrane bound organelle contains chromosomes and pores for genetic material to pass through?
    Nucleus
  • Do plant cells have a cell membrane?
    Yes
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