Mastery Quiz Chp 3 – Flashcards
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A bacterial cell moving toward light would be an example of
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positive phototaxis
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__________ may have flagella.
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Archaea, bacteria, and eukaryotes
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Which of the following is NOT a component of bacterial cell walls?
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tubulin
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Which of the following is unique to archaea?
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hami
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When cells are placed in a hypertonic solution, they lose water and shrivel. This process is called
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crenation.
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The cell walls of __________ contain peptidoglycan.
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bacteria
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Endocytosis and exocytosis are means of transport used by
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eukaryotes.
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Which of the following processes requires a carrier protein?
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both facilitated diffusion and active transport
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Which of the following statements concerning the characteristics of life is FALSE?
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reproduction is defined as an increase in the size of an organism.
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Bacterial cell walls that are resistant to drying contain
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waxes.
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Which of the following is NOT associated with the nucleus of a eukaryotic cell?
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cristae
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ATP is expended in which of the following processes?
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both active transport and group translocation
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The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of
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group translocation.
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Which of the following is classified as a membranous organelle of eukaryotic cells?
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endoplasmic reticulum
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Which of the following may have cell walls containing teichoic acids?
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Gram-positive bacteria
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Which of the following have external structures containing a periplasmic space?
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Gram-negative bacteria
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Endospores survive a variety of harsh conditions in part because of the presence of
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dipicolinic acid
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The cytoplasmic membranes of __________ contain phospholipids and proteins.
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both bacterial and eukaryotic cells
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Chloroplasts differ from mitochondria in that they have
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light-harvesting pigments.
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Bacteria of the genus Mycoplasma are distinguished from other bacterial cells by
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the absence of a cell wall.
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__________ may have pili.
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Bacteria
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Which of the following statements concerning centrioles is FALSE?
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Centrioles are found in all organisms except prokaryotes.
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The cytoplasmic membranes of __________ contain lipids.
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all prokaryotes
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The cell walls of __________ contain tetrapeptides.
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both Gram-positive and Gram-negative bacteria
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Some members of __________ have hami.
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archaea
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Which of the following is NOT a component of bacterial flagella?
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tubulin
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Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria?
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mycolic acid
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Bacterial pili can be described as
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specialized fimbriae.
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Which of the following prokaryotic cells contain an outer membrane?
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Gram-negative bacteria
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One lipid found in eukaryotes but not in prokaryotes is
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steroid.
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Short, hairlike structures used only by eukaryotic cells for movement are called
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cilia.
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Some __________ use group translocation as a means of transport.
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bacteria
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Which of the following bacterial cell structures plays an important role in the creation of biofilms?
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both fimbriae and glycocalyces
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Lipid-soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes?
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diffusion
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Which of the following statements about the endoplasmic reticulum (ER) is CORRECT?
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The ER is a transport system within the cytoplasm.
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Which of the following statements concerning endocytosis and exocytosis is CORRECT?
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Endocytosis produces a structure called a food vesicle.
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Which of the following statements concerning pili is FALSE?
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Pili are longer than fimbriae and flagella.
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Which of the following organelles is responsible for producing most of the ATP in a eukaryotic cell?
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mitochondrion
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Which of the following statements concerning the endosymbiotic theory is FALSE?
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Eukaryotes were formed from the union of small anaerobic cells by larger aerobic cells.
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Membrane rafts are found in the cytoplasmic membranes of
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eukaryotes.
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Which of the following statements concerning osmosis is FALSE?
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During osmosis, water crosses to the side of the membrane with a lower solute concentration.
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Using a microscope, you observe an amoeba moving toward a food source. This is an example of
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responsiveness.
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The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT
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transfer of genetic material between cells
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Hopanoids are found in __________ cytoplasmic membranes.
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bacterial
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Which of the following is NOT a function of the eukaryotic cytoskeleton?
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packages cellular secretions
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Lipid A is also known as
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endotoxin
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Which of the following statements concerning prokaryotic flagella is FALSE?
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Prokaryotic flagella are composed of tubulin.
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Which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins?
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small hydrophobic molecules
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Which of the following is paired incorrectly?
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algae: glycocalyx present
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Cytoplasmic membranes of __________ are composed of phospholipids.
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both bacteria and eukaryotes
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Lysosomes result from the endocytosis of food particles by eukaryotic cells.
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False
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Chromatin is composed of DNA and special packaging proteins called hopanoids.
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True
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All cell membranes contain phospholipids and a wide variety of proteins.
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False
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Eukaryotic ribosomes are composed of 60S and 40S subunits.
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True
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The Golgi body prepares cellular products for export.
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True
