TEST BANK microbiology a systems approach cowan 3e chapter005

Chapter 005 Eukaryotic Cells and Microorganisms Multiple Choice Questions Protists include A Yeasts and molds B Algae and protozoa C Helmint hs D All of the choices are correct E None of the choices are correct The eukaryotic cell organelle that most resembles a bacterial cell is the A Nucleu s B Golgi apparatus C Mitochondr ia D Lysosom e E Ribosom e The endosymbiotic theory says that precursor eukaryotic cells acquired flagella by endosymbiosis with a _ ancestor and others gained photosynthetic ability from endosymbiosis with a _ ancestor A Protozoan, algae B Archaea, cyanobacteria C Spirochete, cyanobacteria D Helminth, algae E None of the choices are correct The endosymbiotic theory has been developed to explain the emergence of A Arche a B Bacteri a C Prokaryot es D Eukaryot es E None of the choices are correct Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular A Symbiosi s B Parasitisi m C Communalis m D None of the choices are correct Which of the following is found in eukaryotic cells but not in prokaryotic cells? A Nucleu s B Mitochondr ia C Endoplasmic reticulum D Lysosome s E All of the choices are correct Eukaryotic flagella differ from prokaryotic flagella because only eukaryotic flagella A Are used for cell motility B Facilitate chemo taxis C Facilitate photo taxis D Are long whip-like structures E Contain microtubules Cilia are found in certain A Protozo a B Alga e C Fung i D Bacteri a E All of the choices are correct There are nine peripheral pairs and one central pair of _ found inside eukaryotic flagella and cilia A Filament s B Microtubul es C Flagell a D Cili a E None of the choices are correct 10 Cell walls are not found on typical cells of A Protozo a B Alga e C Fung i D Bacteri a E All of the choices are correct 11 The eukaryotic cell's glycocalyx is A Mostly polysaccharide B The site where many metabolic reactions occur C Also called the cell wall D Composed of many diverse proteins E Protection against osmotic lysis 12 Which of the following is not a function of the eukaryote glycocalyx? A Protectio n B Adherenc e C Moveme nt D Reception of chemical signals E All of the choices are functions 13 Chitin is a chemical component of the cell walls of A Protozo a B Alga e C Fung i D Bacteri a E All of the choices are correct 14 The eukaryote cell membrane is composed of A Sterol s B Protein s C Phospholipi ds D All of these E Only sterols and phospholipids 15 The site for ribosomal RNA synthesis is the A Ribosom e B Nucleolu s C Nucleu s D Golgi apparatus E Lysosom e 16 When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible thread-like mass called the A Nuclear envelope B Nucleosom e C Nucleolu s D Nucleoplas m E Chromati n 17 Histones are A Found in polyribosomes B Enzymes found in lysosomes C Proteins of the cytoskeleton D Proteins associated with DNA in the nucleus E On the surface of rough endoplasmic reticulum 18 The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear A His tones B Chromati n C Pore s D Endoplasmic reticulum E Inclusion s 19 The cell's series of tunnel-like membranes functioning in transport and storage are the A Mitochondr ia B Iysosome s C Golgi apparatus D Chloroplas ts E Endoplasmic reticulum 20 An organelle that is a stack of flattened, membranous sacs and functions to receive, modify and package proteins for cell secretion is the A Mitochondr ia B Lysosome s C Golgi apparatus D Chloroplas ts E Endoplasmic reticulum 21 Protists with contractile vacuoles A Are algae B Use them to expel excess water from the cell C Typically live in salty seawater D Use them for motility E All of the choices are correct 22 A _ originates from the golgi apparatus as one type of vesicle that contains a variety of enzymes for intracellular digestion A Perixosom e B Lysosom e C Magneto some D Inclusio n E Ribosom e 23 Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found? A Mitochondr ia B Lysosome s C Golgi apparatus D Chloroplas ts E Endoplasmic reticulum 24 Mitochondria possess all of the following except A Enzymes for metabolism B Crista e C Electron transport chain proteins D Enzymes for photosynthesis E 70S ribosomes (prokaryote) 25 Which organelle is found in algae but not found in protozoa or fungi? A Mitochondr ia B Lysosome s C Golgi apparatus D Chloroplas ts E Endoplasmic reticulum 26 In eukaryotic cells, which of the following contains DNA? A Nucleus, mitochondria, Golgi apparatus B Nucleus, endoplasmic reticulum, Golgi apparatus C Nucleus, nucleolus, Golgi apparatus D Nucleus, chloroplast, mitochondria E Nucleus, chloroplast, peroxisome 27 Chloroplasts are composed of membranous sacs called _ that carry chlorophyll Surrounding these sacs is a ground substance called _ A Thylakoids, stroma B Granna, stroma C Cristae, stroma D Cristae, matrix E Thylakoid, matrix 28 The size of a eukaryotic cell ribosome is A 30 S B 40 S C 50 S D 70 S E 80 S 29 Which of the following is not true of the cytoskeleton? 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Objective: and between flagella in prokaryotes and eukaryotes Eukaryotic flagella differ from prokaryotic flagella because only eukaryotic flagella A Are used for cell motility B Facilitate chemo taxis