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5 Written questions

5 Matching questions

  1. eukaryotic cell
  2. electron microscope (EM)
  3. intermediate filament
  4. peroxisome
  5. lysosome
  1. a An organelle containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
  2. b 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.
  3. c 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.
  4. d A digestive organelle in eukaryotic cells; contains hydrolytic enzymes that digest the cell's food and wastes.
  5. e An 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.

5 Multiple choice questions

  1. 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.
  2. A membrane-enclosed sac that is part of the endomembrane system of a eukaryotic cell, having diverse functions.
  3. A structure in an animal cell composed of cylinders of microtubule triplets arranged in a 9 and 0 pattern. An animal usually has a centrosome with a pair of centrioles involved in cell division.
  4. 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. A macromolecule consisting of one or more polypeptides linked to short chains of sugars.

5 True/False questions

  1. endomembrane systemA network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles.


  2. cell wallThe theory that all living things are composed of cells and that all cells come from other cells.


  3. endoplasmic reticulum (ER)An extensive membranous network in a eukaryotic cell, continuous with the outer nuclear membrane and composed of ribosome-studded (rough) and ribosome-free (smooth) regions.


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


  5. nucleoidA dense region of DNA in a prokaryotic cell.


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