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5 Written questions

5 Matching questions

  1. Vesicle
  2. mitochondrial matrix
  3. electron microscope (EM)
  4. micrograph
  5. nucleoid
  1. a A sac made of membrane in the cytoplasm of a eukaryotic cell.
  2. b A dense region of DNA in a prokaryotic cell.
  3. c The fluid contained within the inner membrane of a mitochondrion.
  4. d An instrument that focuses an electron beam through, or onto the surface of, a specimen. An electron microscope achieves a hundredfold greater resolution than a light microscope.
  5. e A photograph taken through a microscope.

5 Multiple choice questions

  1. A macromolecule consisting of one or more polypeptides linked to short chains of sugars.
  2. A structure within the nucleus of a eukaryotic cell where ribosomal RNA is made and assembled with proteins imported from the cytoplasm to make ribosomal subunits.
  3. A 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.
  4. Everything inside a cell between the plasma membrane and the nucleus; consists of a semifluid medium and organelles.
  5. 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.

5 True/False questions

  1. central vacuoleA membrane-enclosed sac occupying most of the interior of a mature plant cell, having diverse roles in reproduction, growth, and development.

          

  2. 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.

          

  3. rough ERA network of interconnected membranous sacs in a eukaryotic cell's cytoplasm. Rough ER membranes are studded with ribosomes that make membrane proteins and secretory proteins.

          

  4. cellular metabolismA protective layer external to the plasma membrane in plant cells, bacteria, fungi, and some protists; protects the cell and helps maintain its shape.

          

  5. nuclear envelopeA double membrane, perforated with pores, which encloses the nucleus and separates it from the rest of the eukaryotic cell.

          

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