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5 Written questions

5 Matching questions

  1. lysosome
  2. central vacuole
  3. rough ER
  4. peroxisome
  5. Reverse Transcriptase
  1. a An organelle containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
  2. b A membrane-enclosed sac occupying most of the interior of a mature plant cell, having diverse roles in reproduction, growth, and development.
  3. c A digestive organelle in eukaryotic cells; contains hydrolytic enzymes that digest the cell's food and wastes.
  4. d A 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.
  5. e Makes RNA into DNA

5 Multiple choice questions

  1. 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.
  2. A microscope that uses an electron beam to study the surface architecture of a cell or other specimen.
  3. An open channel in a plant cell wall through which strands of cytoplasm connect from adjacent cells.
  4. A microscope that uses an electron beam to study the internal structure of thinly sectioned specimens.
  5. One of a number of disk-shaped membranous sacs inside a chloroplast. Thylakoid membranes contain chlorophyll and the enzymes of the light reactions of photosynthesis. A stack of thylakoids is called a granum.

5 True/False questions

  1. microfilamentThe thinnest of the three main kinds of protein fibers making up the cytoskeleton of a eukaryotic cell; a solid, helical rod composed of the globular protein actin.

          

  2. cristaAn infolding of the inner membrane of a mitochondrion in which is embedded the electron transport chain and the enzyme catalyzing the synthesis of ATP.

          

  3. nucleusA 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.

          

  4. 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.

          

  5. endoplasmic reticulum (ER)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.

          

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