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5 Written questions

5 Matching questions

  1. Vacuole
  2. nuclear envelope
  3. ribosome
  4. flagellum
  5. plasma membrane
  1. a A membrane-enclosed sac that is part of the endomembrane system of a eukaryotic cell, having diverse functions.
  2. b A cell structure consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm. The ribosomal subunits are constructed in the nucleolus.
  3. c A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.
  4. d The membrane that sets a cell off from its surroundings and acts as a selective barrier to the passage of ions and molecules into and out of the cell; consists of a phospholipid bilayer in which are embedded molecules of protein and cholesterol.
  5. e A long cellular appendage specialized for locomotion. The flagella of prokaryotes and eukaryotes differ in both structure and function. Like cilia, eukaryotic flagella have a 9 + 2 arrangement of microtubules covered by the cell's plasma membrane.

5 Multiple choice questions

  1. A dense region of DNA in a prokaryotic cell.
  2. An organelle in eukaryotic cells where cellular respiration occurs. Enclosed by two concentric membranes, it is where most of the cell's ATP is made.
  3. An infolding of the inner membrane of a mitochondrion in which is embedded the electron transport chain and the enzyme catalyzing the synthesis of ATP.
  4. A sac made of membrane in the cytoplasm of a eukaryotic cell.
  5. A protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.

5 True/False questions

  1. organelleA stack of hollow disks formed of thylakoid membrane in a chloroplast. Grana are the sites where light energy is trapped by chlorophyll and converted to chemical energy during the light reactions of photosynthesis.

          

  2. chloroplastEverything inside a cell between the plasma membrane and the nucleus; consists of a semifluid medium and organelles.

          

  3. intermediate filamentAn intermediate-sized protein fiber that is one of the three main kinds of fibers making up the cytoskeleton of eukaryotic cells. Intermediate filaments are ropelike, made of fibrous proteins.

          

  4. cytoplasmEverything inside a cell between the plasma membrane and the nucleus; consists of a semifluid medium and organelles.

          

  5. microfilamentThe thickest of the three main kinds of fibers making up the cytoskeleton of a eukaryotic cell; a straight, hollow tube made of globular proteins called tubulins. Microtubules form the basis of the structure and movement of cilia and flagella.