Microbiology Exam 1 (chapter 1, 2, 3, 4)
by which of the following mechanism can a cell transport a substance from a lower to a higher concentration? a. simple diffusion b. active transport c. group translocation d. facilitated diffusion
b
which of the following microscopes would you use to generate a 3D rendering of a bacterial biofilm (community)? a. bright field microscope b. confocal microscope c. phase contrast microscope d. transmission electron microscope
b
Archaea differ from bacteria in that archara... a. lack nuclei b. are prokaryotic c. lack peptidoglycan d. reproduce by binary fission
c
Edward Jenner developed the first vaccine to treat what disease in humans? a. anthrax b. tuberculosis c. smallpox d. cow pox
c
Glucose is a 6 carbon monosaccharide, what is its chemical formula? a. C6 H10 O6 b. C5 H10 O5 c. C6 H12 O6 d. C5 H12 O5
c
If you were to forget to apply oil when using oil immersion lens, how would the specimen appear? a. clear and have good resolution b. the same as if you remembered to add oil c. fuzzy and have poor resolution d. the specimen would be significantly larger
c
All compounds that contain carbon are considered organic. true or false
false
Archaea are pathogens of humans. true or false
false
Electrons that are shared forming a covalent bond are always equally shared. true or false
false
Spontaneous generation refers to living cells arising from other living cells. True or false
false
Clostridium tetani undergoes sporulation to form endospores true or false
true
Gram negative cells have a periplasmic space. true or false
true
Peptidoglycan is the chemical that forms the cell of bacteria. true or false
true
Starch, dextran, glycogen, and cellulose belong to which group of macromolecules. a. lipids b. carbohydrates c. nucleic acids d. proteins
b
Which of the following is a correct usage binomial nomenclature? a. Escherichia Coli b. Escherichia coli
b
(Dark background, light organelles) What type of microscope was used for the able specimen? a. dark field microscope b. phase contrast microscope c. confocal microscope d. bright field microscope
a
Hydrolysis of a triglyceride produces? a. glycerol and fatty acids b. up to 20 different amino acids c. monosaccharides d. four types of nucleotides
a
Spontaneous generation of microorganisms was disproven by: a. Pasteur b. Needham c. Spallanzani d. Lister
a
What type of "bond" is formed between the hydrogen of one molecule and the nitrogen of another molecule? a. Hydrogen bond b. Ionic bond c. Polar covalent bond d. Non-polar covalent bond
a
Which of the following microscopes utilizes visible light (a regular light bulb) to illuminate a specimen? a. phase contrast microscope b. scanning electron microscope c. confocal microscope d. fluorescence microscope
a
Who was the first to observe microorganisms under a microscope? a. Von Leeuwenhoek b. Cook c. Pasteur d. Needham
a
each of the following statements concerning the gram- positive cell wall is true EXCEPT it a. contains lipopolysaccharide b. sensitive to lysozyme c. sensitive to penicillin d. contains teichoic acids
a
what is the best definition of resolution? a. the ability of a lens to distinguish between two very close together objects b. total magnification of two close together objects c. how light bends as it passes through a medium d. ability of a microscope to stay in focus when changing objective lenses
a
What does a tetrad look like?
a cube
(Image like bright-field microscope with purple and pink staining) the attached image is shown is the result of following types staining procedures? a. simple stain b. differential stain c. negative stain d. none of the above
b
99.5% of living matter is made of SCHNOP, what is SCHNOP? a. Sulfur, Carbon, Hydrogen, Oxygen, Nitrogen, Potassium b. Sulfur, Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus c. Sulfur, Carbon, Helium, Oxygen, Nitrogen, Phosphorus d. Sulfate, Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus
b
At which level of protein structure are alpha-helicies and beta-pleats (sheets) formed? a. Quaternary b. Secondary c. Primary d. Tertiary
b
Gases such as oxygen pass through the cytoplasmic membrane: a. via osmosis b. by simple diffusion c. by facilitated diffusion d. through a transport protein
b
Robert Koch discovered the cause of? a. small pox b. anthrax c. syphilis d. cow pox
b
The structure of an atom includes which of the following a. a nucleus with negatively charged protons and uncharged neutrons, with orbiting positively charged electrons b. a nucleus that contains protons, neutrons, and electrons which are all charged but balance one another c. a nucleus with positively charged protons and uncharged neutrons, with orbiting negatively charged electrons. d. a nucleus with negatively charged electrons balanced by positively charged protons and orbiting uncharged neutrons
c
Which are the macromolecules making up the membranes of cells? a. carbohydrates b. nucleic acids c. lipids d. proteins
c
which of the following microscopes would be appropriate to image DNA or a protein? a. transmission electron microscope b. confocal microscope c. atomic force microscope d. scanning electron microscope
c
which type of microscope would you use to view the internal structures of a bacterial cell? a. scanning electron microscope b. atomic force microscope c. transmission electron microscope d. confocal microscope
c
(Graphic, 3-D image of microbes on surface) Which of the following microscopes would be used to get attached image of bacteria and algae? a. atomic force microscope b. transmission electron microscope c. bright-field microscope d. scanning electron microscope
d
Which of the following is a non-living obligate parasite? a. bacteria b. yeast c. protozoans d. viruses
d
the difference between simple diffusion and facilitated diffusion is that facilitated diffusion a. requires ATP b. moves materials from a higher to a lower concentration c. doesn't require ATP d. requires transport proteins
d
what external structure aids bacteria in attachment and protects from phagocytosis? a. peptidoglycan b. fimbriae c. slime layer d. capsule
d
which of the following is not true regarding bright-field light microscope? a. can resolve objects down to 0.4uM b. utilize two sets of lenses c. maximum magnification of 1000x d. used typically for viewing living bacterial cells
d
which of the following is true regarding the DNA within most bacterial cells? a. found in multiple copies b. has a linear structure c. located within the nucleus d. located in the nucleoid
d
which type of flagella arrangment would appear as a single flagella on one end of a bacterial cell? a. peritrichous b. amphitrichous c. lophotrichous d. monotrichous
d