Chapter Chapter 4: A Tour of the Cell
 
Chapter Quiz
 

1 .       Sara would like to film the movement of chromosomes during cell division. Her best choice for a microscope would be a _____. (4.1) [Hint]

 light microscope, because of its resolving power
 transmission electron microscope, because of its magnifying power
 scanning electron microscope, because the specimen is alive
 transmission electron microscope, because of its great resolving power
 light microscope, because the specimen is alive


2 .       A magnified picture of the detailed architecture of cell surfaces can best be obtained from a _____. (4.1) [Hint]

 scanning electron microscope
 transmission electron microscope
 light microscope
 magnifying glass
 none of the above


3 .       The term "resolving power" refers to which of the following? (4.1) [Hint]

 the apparent increase in the size of an object
 the source of the illumination
 the depth of focus
 the clarity of the image in showing two objects as separate
 the type of cell being observed


4 .       A normal size range for a typical eukaryotic cell is _____. (4.2) [Hint]

 0.1 nanometers
 10 nanometers
 100 nanometers
 1–10 micrometers
 10–100 micrometers


5 .       The maximum size of a cell is limited by _____. (4.2) [Hint]

 its need for enough surface area to make exchanges with its environment
 the number of organelles that can be packed inside
 the materials needed to build it
 the amount of flexibility it needs to be able to move
 the amount of food it needs to survive


6 .       What do limits on maximum cell size depend on? (4.2) [Hint]

 the number of organelles
 surface-to-volume ratio
 number of surrounding cells
 amount of DNA in the nucleus
 thickness of the cell membrane


7 .       To enter or leave a cell, substances must pass through _____. (4.3) [Hint]

 a microtubule
 the Golgi apparatus
 a ribosome
 the nucleus
 the plasma membrane


8 .       Which of the following structures are NOT found in prokaryotic cells? (4.3) [Hint]

 flagella
 cell membranes
 mitochondria
 ribosomes
 RNA


9 .       Bacterial cells are prokaryotic; unlike a typical eukaryotic cell they _____. (4.4) [Hint]

 lack a nucleus
 have a smaller nucleus
 lack a plasma membrane
 have fewer internal membranous compartments
 have a greater variety of organelles


10 .       A certain cell has mitochondria, ribosomes, smooth and rough endoplasmic reticulum, and other parts. Based on this information, it could NOT be _____. (4.4) [Hint]

 a cell from a pine tree
 a grasshopper cell
 a yeast (fungus) cell
 a bacterium
 actually, it could be any of the above


11 .       Which of the following are found in prokaryotic cells? (4.4) [Hint]

 Golgi apparatuses
 mitochondria
 nucleoli
 proteins
 all of the above


12 .       Which of the following would NOT be found in a cell's cytoplasm? (4.5) [Hint]

 a ribosome
 the nucleus
 a mitochondrion
 a microtubule
 fluid in which most organelles are found


13 .       What is the function of the nucleolus? (4.5) [Hint]

 to contain the hereditary blueprint of the cell
 to modify substances made on the endoplasmic reticulum
 to organize the spindle fibers for cell division
 to manufacture ribosomes
 none of the above


14 .       Most of the DNA in a eukaryotic cell is in _____. (4.5) [Hint]

 the cytoskeleton
 the mitochondria
 the endomembrane system
 the cytoplasm
 the nucleus


15 .       A plant cell was grown in a test tube containing radioactive nucleotides, the parts from which DNA is built. Later examination of the cell showed the radioactivity to be concentrated in the _____. (4.5) [Hint]

 rough endoplasmic reticulum
 peroxisome
 smooth endoplasmic reticulum
 central vacuole
 nucleus


16 .       Three or four of the following cellular organelles possess membranes. Which one, if any, does NOT possess membranes? If all the listed organelles possess differentially permeable membranes, choose answer (5). (4.6) [Hint]

 nucleus
 chloroplasts
 mitochondria
 lysosomes
 all of the above


17 .       Which of these is NOT a function of the endomembrane system? (4.6) [Hint]

 division of the cell into compartments
 synthesis of molecules
 control center of the cell
 export of molecules
 storage of molecules


18 .       In muscle cells the ____ is/are specialized for the storage and release of calcium. (4.7) [Hint]

 mitochondria
 smooth endoplasmic reticulum
 the Golgi apparatus
 contractile vacuoles
 rough endoplasmic reticulum


19 .       Of the following organelles, which group is involved in manufacturing the substances needed by the cell? (4.8) [Hint]

 lysosome, vacuole, ribosome
 ribosome, rough endoplasmic reticulum, smooth endoplasmic reticulum
 vacuole, rough endoplasmic reticulum, smooth endoplasmic reticulum
 smooth endoplasmic reticulum, ribosome, vacuole
 rough endoplasmic reticulum, lysosome, vacuole


20 .       Which one of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes? (4.8) [Hint]

 rough endoplasmic reticulum
 smooth endoplasmic reticulum
 lysosomes
 microfilaments
 mitochondria


21 .       The rough endoplasmic reticulum can be considered to be in which general category of organelle? (4.8) [Hint]

 breakdown
 energy-processing
 manufacturing
 support between cells
 communication between cells


22 .       Membrane proteins are synthesized by ribosomes that are attached to _____. (4.8) [Hint]

 the Golgi apparatus
 mitochondria
 the nucleolus
 the endoplasmic reticulum
 lysosomes


23 .       When isolated liver cells are combined with toxins, initial processing in the ______________ increases the solubility of those compounds as an initial step in their excretion. (4.9) [Hint]

 smooth endoplasmic reticulum
 Golgi apparatus
 mitochondrion
 rough endoplasmic reticulum
 lysosome


24 .       You would expect a cell with an extensive Golgi apparatus to _____. (4.9) [Hint]

 make a lot of ATP
 secrete a lot of material
 move actively
 perform photosynthesis
 store large quantities of food


25 .       A researcher made an interesting observation about a protein made by the rough endoplasmic reticulum and eventually used to build a cell's plasma membrane. The protein in the membrane was actually slightly different from the protein made in the ER. The protein was probably altered in the _____. (4.9) [Hint]

 Golgi apparatus
 smooth endoplasmic reticulum
 mitochondrion
 nucleus
 chloroplast


26 .       Lysosomes are derived from _____________ and function in _____________. (4.10) [Hint]

 mitochondria ... anaerobic respiration
 the Golgi apparatus and rough endoplasmic reticulum ... digestion of worn-out organelles
 microtubule organizing centers ... storage of ATP
 symbiotic bacteria ... extrachromosomal inheritance
 nucleoli ... aerobic respiration


27 .       Which one of the following is the most likely consequence for a cell lacking functional lysosomes? (4.11) [Hint]

 The cell becomes crowded with undegraded wastes.
 The cell dies because its ATP-synthesizing mechanisms are missing.
 The cell dies from a lack of enzymes to catalyze metabolic reactions.
 The cell is unable to reproduce itself.
 The cell is unable to grow to a mature size and always remains small.


28 .       Which of the following statements describes the function of the contractile vacuole? (4.12) [Hint]

 It contains trapped bacteria to be digested by the lysosomes.
 It contains the cell sap.
 It eliminates excess water from the cytoplasm of freshwater protists.
 It converts light energy to chemical energy.
 It converts light energy to physical energy.


29 .       Chloroplasts are found in _____. (4.14) [Hint]

 plant cells and some protists
 animal cells only
 both plant cells and animal cells
 neither plant cells nor animal cells
 animal cells and bacterial cells but not in plant cells


30 .       Which cellular organelle is required for photosynthesis in eukaryotic cells? (4.14) [Hint]

 chloroplast
 nucleus
 lysosome
 Golgi apparatus
 mitochondrion


31 .       Mitochondria and chloroplasts are similar in that they both _____________; they are different in that chloroplasts, but not mitochondria, _____________. (4.15) [Hint]

 have a double membrane ... carry out photosynthesis
 have many internal membranes that increase their internal surface area ... are found in plants
 have an internal 9 + 2 arrangement of microtubules ... also have centrioles
 deal with energy transformations ... are found only in eukaryotes
 have a double membrane ... contain DNA


32 .       What are the inner folds of the mitochondria called? (4.15) [Hint]

 cristae
 matrix
 stroma
 grana
 tubules


33 .       The purpose of cellular respiration is the production of which of the following? (4.15) [Hint]

 ATP
 oxygen
 carbon dioxide
 glucose
 all of the above


34 .       Mitochondria appear in the greatest numbers in cells that are _____. (4.15) [Hint]

 reproducing
 metabolically active
 dead
 metabolically inactive
 undergoing cell division


35 .       The internal skeleton of a cell is composed of _____. (4.16) [Hint]

 microtubules, intermediate filaments, and microfilaments
 cellulose and intermediate filaments
 cellulose, microtubules, and centrioles
 microfilaments
 microfilaments and cellulose


36 .       When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become round blobs. The internal structures disrupted by this chemical are probably _____. (4.16) [Hint]

 cell junctions
 microtubules
 rough endoplasmic reticulum
 mitochondria
 dynein arms


37 .       Where would you expect to find contractile proteins in a cell? (4.16) [Hint]

 lysosomes
 cytoskeleton
 nucleus
 smooth endoplasmic reticulum
 chloroplasts


38 .       The protein actin is a component of a(n) _____. (4.16) [Hint]

 intermediate filament
 microtubule
 tubulin
 microfilament
 organelle


39 .       Cilia and flagella move due to energy provided by the enzymatic breakdown of ATP by which of the following? (4.17) [Hint]

 actin
 pseudopodia
 basal bodies
 myosin
 dynein arms


40 .       Basal bodies are most closely associated with which one of the following cell components? (4.17) [Hint]

 bacterial flagella
 centrioles
 cilia
 the central vacuole
 mitochondria


41 .       Dye injected into a plant cell might be able to enter an adjacent cell through a _____. (4.18) [Hint]

 tight junction
 microtubule
 anchoring junction
 plasmodesma
 gap junction


42 .       The cell junctions in plant cells that provide channels between adjacent cells are generally _____. (4.18) [Hint]

 anchoring junctions
 gap junctions
 plasmodesmata
 tight junctions
 synapses


43 .       Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why? (4.18) [Hint]

 The intestinal cells are fused together into one giant cell.
 The intestinal cells are bound together by plasmodesmata.
 The intestinal cells are bound together by tight junctions.
 The intestinal cells are bound together by gap junctions.
 The intestinal cells are bound together by anchoring junctions.


44 .       Which one of the following structures is directly involved in the passage of electrical signals between cells as, for example, in the vertebrate heart? (4.18) [Hint]

 gap junctions
 chemical synapses
 anchoring junctions
 tight junctions
 neuromuscular junctions


45 .       The general function of _____ is the breakdown of substances. (4.19) [Hint]

 chloroplasts
 ribosomes
 cell junctions
 peroxisomes
 Golgi apparatus