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NR 101 MICRO-CHAP 3 QUIZ | LATEST UPDATE

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NR 101 MICRO-CHAP 3 QUIZ CHAPTER 3 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following chemical substances contributes ... to the unique characteristics of acid-fast bacteria? 1) A) lipoteichoic acid B) mycolic acid C) N-acetylglucosamine D) endotoxin E) peptidoglycan 2) Which of the following statements concerning prokaryotic flagella is TRUE? 2) A) A "run" results from clockwise movement of the flagellum. B) Prokaryotic flagella are anchored to the cell wall by means of the basal body. C) Prokaryotic flagella move in a whip-like manner. D) Prokaryotic flagella are composed of tubulin. E) Treponema is an example of a bacterium that has a tuft of polar flagella. 3) Cytoplasmic membranes of ________ are composed of phospholipids. 3) A) archaea B) eukaryotes C) bacteria D) prokaryotes E) bacteria and eukaryotes Answer: E 4) Bacterial cell walls that are resistant to drying contain 4) A) waxes. B) carbohydrates. C) lipopolysaccharide. D) tubulin. E) amino acids. 5) Which of the following is classified as a nonmembranous organelle of eukaryotic cells? 5) A) endoplasmic reticulum B) Golgi body C) peroxisome D) centriole E) mitochondrion 6) Which of the following is NOT a component of bacterial flagella? 6) A) filament B) tubulin C) basal body D) flagellin E) hook 7) Endocytosis and exocytosis are means of transport used by 7) A) eukaryotes. B) archaea. C) bacteria. D) all prokaryotes. E) nothing; no cells use both processes. 8) A bacterial cell moving toward light would be an example of 8) A) negative phototaxis. B) positive phototaxis. C) negative chemotaxis. D) tumbles. E) positive chemotaxis. 9) Which of the following have a periplasmic space? 9) A) Gram-negative bacteria only B) Gram-positive bacteria only C) both Gram-positive and Gram-negative bacteria D) eukaryotes E) archaea 10) The cytoplasmic membranes of ________ contain phospholipids and proteins. 10) A) archaeal cells B) eukaryotic cells C) bacterial cells D) both bacterial and eukaryotic cells E) archaeal, bacterial, and eukaryotic cells 11) Which of the following statements concerning the endosymbiotic theory is FALSE? 11) A) Mitochondria and chloroplasts can divide independently of the cell. B) Mitochondria and chloroplasts have their own DNA and ribosomes. C) The endosymbiotic theory is not universally accepted. D) The cristae of mitochondria evolved from the cytoplasmic membrane of prokaryotes. E) Eukaryotes were formed from the union of small anaerobic cells by larger aerobic cells. 12) Which of the following is paired INCORRECTLY? 12) A) algae; glycocalyx present B) archaea; polysaccharide cell wall C) plants; cellulose cell wall D) fungi; chitin, glucomannan and/or cellulose cell wall E) bacteria; peptidoglycan cell wall 13) Which of the following statements concerning pili is FALSE? 13) A) A bacterial cell will usually have only one or two pili. B) Pili facilitate the transfer of DNA among bacterial cells. C) Pili are long, hollow tubules. D) Not all bacteria have pili. E) Pili are longer than fimbriae and flagella. 14) Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival? A) hypotonic B) low temperature C) hypertonic D) isotonic E) a biofilm 15) Some members of ________ have hami. 15) A) bacteria B) eukaryotes C) archaea D) archaea and bacteria E) bacteria and eukaryotes 16) Which of the following processes requires a carrier protein? 16) A) facilitated diffusion only B) endocytosis only C) active transport only D) both facilitated diffusion and active transport E) diffusion only 17) Which of the following may have cell walls containing teichoic acids? 17) A) archaea B) Gram-negative bacteria only C) Gram-positive bacteria only D) both Gram-positive and Gram-negative bacteria E) all prokaryotes 18) Which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins? A) small hydrophilic molecules only B) small hydrophobic molecules only C) ions only D) large molecules only E) both ions and hydrophilic molecules 19) Which of the following statements about the endoplasmic reticulum (ER) is CORRECT? 19) A) The ER is a transport system within the cytoplasm. B) The smooth ER is a site of ATP synthesis. C) The rough ER is the site of lipid synthesis. D) The smooth ER has ribosomes associated with it. E) The ER is a lipid storage organelle. 20) Which of the following prokaryotic cells contain an outer membrane? 20) A) Gram-negative bacteria only B) Gram-positive bacteria only C) both Gram-positive and Gram-negative bacteria D) all prokaryotes E) archaea 21) Hopanoids are found in ________ cytoplasmic membranes. 21) A) eukaryotic B) bacterial C) archaeal D) no E) prokaryotic 22) Lipid A is a component of 22) A) cytoplasmic membranes. B) mycolic acid. C) lipopolysaccharides. D) plant cell walls. E) bacterial glycocalyces. 23) Which of the following statements concerning centrioles is FALSE? 23) A) The structure of centrioles is similar to that of eukaryotic flagella and cilia. B) Centrioles are found in all organisms except prokaryotes. C) Centrioles are composed of microtubules. D) Centrioles are found in a region of the cell called the centrosome. E) Centrioles are believed to play a role in cellular processes such as mitosis and cytokinesis. 24) ATP is expended in which of the following processes? 24) A) active transport B) diffusion C) facilitated diffusion D) group translocation E) both active transport and group translocation 25) Protein synthesis occurs in the 25) A) ribosome. B) periplasmic space. C) inclusion. D) cytoskeleton. E) nucleus. 26) Using a microscope, you observe an amoeba moving toward a food source. This is an example of 26) A) growth. B) cellular structure. C) metabolism. D) responsiveness. E) reproduction. 27) What is the function of the cellular structure indicated by "p" in Figure 3-3? A) packaging of materials for export B) synthesis of lipids C) protein synthesis D) cell movement E) ATP synthesis 28) The cells illustrated in Figure 3-1 are in a(n) ________ environment. A) isotonic B) passive C) fluid mosaic D) hypotonic E) hypertonic 29) Which of the following may be a component of bacterial cell walls? 29) A) mycolic acid B) tubulin C) carrageenan D) lipoteichoic acids E) both lipoteichoic and mycolic acids 30) Chloroplasts differ from mitochondria in that the former have 30) A) two lipid bilayers. B) cristae. C) thylakoids. D) DNA. E) 70S ribosomes. 31) Which of the following statements concerning osmosis is FALSE? 31) A) Crenation results when cells are placed in a hypertonic solution. B) Cells placed in hypotonic solutions will gain water. C) During osmosis, water crosses to the side of the membrane with a lower solute concentration. D) Osmosis stops when the system reaches equilibrium. E) Osmosis requires a selectively permeable membrane. 32) Which of the following statements concerning the characteristics of life is FALSE? 32) A) Reproduction can occur asexually or sexually in living things. B) Living things store metabolic energy in the form of chemicals such as ATP. C) Reproduction is defined as an increase in the size of an organism. D) Organisms may not exhibit all of the characteristics of life at all times. E) Viruses have some, but not all, of the characteristics of living things. 33) Membrane rafts are found in the cytoplasmic membranes of 33) A) eukaryotes only. B) archaea only. C) bacteria only. D) both archaea and bacteria. E) both archaea and eukaryotes. 34) Cell walls composed of polysaccharide are found in 34) A) bacteria only. B) archaea only. C) eukaryotes only. D) archaea and eukaryotes only. E) archaea, bacteria, and eukaryotes. 35) The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT 35) A) protection against dehydration. B) cellular recognition and communication. C) anchoring cells to each other. D) transfer of genetic material between cells. E) strengthening the cell surface. 36) Endospores survive a variety of harsh conditions in part because of the presence of 36) A) hopanoids. B) mycolic acid. C) dipicolinic acid. D) lipopolysaccharide. E) glycoproteins. 37) Short, hairlike structures used only by eukaryotic cells for movement are called 37) A) pili. B) fimbriae. C) cilia. D) pseudopodia. E) flagella. 38) Which of the following bacterial cell structures plays an important role in the creation of biofilms? 38) A) flagella B) glycocalyces C) fimbriae D) pili E) both fimbriae and glycocalyces 39) Which of the following is NOT a function of the eukaryotic cytoskeleton? 39) A) aids in contraction of the cell B) performs endocytosis C) anchors organelles D) gives shape to the cell E) packages cellular secretions 40) Which of the following is associated with the mitochondria of a eukaryotic cell? 40) A) inclusions B) thylakoids C) chromatin D) nucleolus E) cristae 41) Lipid-soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes? 41) A) facilitated diffusion B) group translocation C) osmosis D) active transport E) diffusion 42) Which of the following organelles is responsible for producing most of the ATP in a eukaryotic cell? A) nucleus B) mitochondrion C) smooth endoplasmic reticulum D) lysosome E) Golgi body 43) The cell walls of some ________ are composed of proteins. 43) A) eukaryotes B) prokaryotes C) archaea D) bacteria E) bacteria and eukaryotes 44) Some ________ use group translocation as a means of transport. 44) A) bacteria B) eukaryotes C) eukaryotes and prokaryotes D) archaea E) protozoa 45) A lipid found in prokaryotes but NOT in eukaryotes is 45) A) steroid. B) fatty acid. C) phospholipid. D) triglyceride. E) hopanoid. 46) Which of the following statements concerning endocytosis and exocytosis is TRUE? 46) A) Endocytosis is a form of passive transport, whereas exocytosis is a form of active transport. B) Waste products and secretions are exported from the cell during endocytosis. C) Phagocytosis is a type of endocytosis in which liquids are brought into the cell. D) Endocytosis produces a structure called a food vesicle. E) These processes occur in both prokaryotes and eukaryotes. 47) The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of A) plasmolysis. B) diffusion. C) osmosis. D) facilitated diffusion. E) group translocation. 48) What is the function of the cellular structure indicated by "c" in Figure 3.2? A) protect from dehydration only B) attach to surfaces only C) provide shape only D) attach to surfaces and protect from dehydration E) provide shape, attach to surfaces, and protect from dehydration 49) Which of the following is unique to archaea? 49) A) hami B) peptidoglycan C) LPS D) pili E) fimbriae 50) ________ may have pili. 50) A) Archaea B) Bacteria C) Prokaryotes D) Eukaryotes E) Both eukaryotes and bacteria [Show More]

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