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5 Written questions

5 Matching questions

  1. eukaryotic cell
  2. scanning electron microscope (SEM)
  3. cell wall
  4. nuclear envelope
  5. endomembrane system
  1. a A double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.
  2. b A microscope that uses an electron beam to study the surface architecture of a cell or other specimen.
  3. c A protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.
  4. d A network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles.
  5. e A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All organisms except bacteria and archaea are composed of eukaryotic cells.

5 Multiple choice questions

  1. The theory that all living things are composed of cells and that all cells come from other cells.
  2. A digestive organelle in eukaryotic cells; contains hydrolytic enzymes that digest the cell's food and wastes.
  3. The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water; Sugars are made in the stroma by the enzymes of the Calvin cycle.
  4. An organelle containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
  5. A substance in which the cells of an animal tissue are embedded; consists of protein and polysaccharides.

5 True/False questions

  1. VacuoleA dense region of DNA in a prokaryotic cell.

          

  2. plasmodesmaAn open channel in a plant cell wall through which strands of cytoplasm connect from adjacent cells.

          

  3. light microscope (LM)An optical instrument with lenses that refract (bend) visible light to magnify images and project them into a viewer's eye or onto photographic film.

          

  4. cytoplasmAn organelle found in plants and photosynthetic protists that absorbs sunlight and uses it to drive the synthesis of organic molecules (sugars) from carbon dioxide and water.

          

  5. flagellumA 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.