Micro Exam 1

56 Questions

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Microorganism Quizzes & Trivia

Microorganisms also known as microbes are unicellular living organisms. This fact makes them very small. The Micro exam below tests on among other things microorganisms. Toughen up and test your ability below. All the best.


Questions and Answers
  • 1. 
    I will perform best in this course if I:
    • A. 

      Rely on absorbing information only from the lectures

    • B. 

      Read ahead in the textbook, look up all new terms, attend class and ask clarifying questions

    • C. 

      Copy answers from my neighbors

    • D. 

      Expect my hand to be held

  • 2. 
    Which of the following statement(s) are true regarding this course: 
    • A. 

      There are a total of 400 possible points, plus an ungraded online test on plagarism

    • B. 

      No extra credit is offered

    • C. 

      Exams and quizzes cannot be made up or rescheduled unless NDSU is closed due to weather

    • D. 

      Exams are closed book and cumulative

    • E. 

      All of the above

  • 3. 
    Chapter 1 details many important discoveries made by aristocrats (older Caucasian men). The main reason for the over-representation of this particular demographic is that: 
    • A. 

      By a matter of chance, they happened to populate the leisure class with time and resources available to follow their curiosity while others labored.

    • B. 

      They were smarter than everyone else

    • C. 

      They worked harder than others

    • D. 

      Option4

  • 4. 
    The graph above illustrates what type of growth, which is also used by microbes: 
    • A. 

      Linear

    • B. 

      Curved

    • C. 

      Exponential

    • D. 

      Unsustainable

  • 5. 
    Microbes first became intimately associated with humans during which epoch?
    • A. 

      None of those below

    • B. 

      The Stone Age

    • C. 

      The Bronze Age

    • D. 

      The Iron Age

    • E. 

      The Middle Ages

  • 6. 
    Based on what we know about how organisms grow, predict what this population curve will look like in the future
    • A. 

      It will continue on the current trajectory

    • B. 

      It will level off and then crash if waste products aren't dealt with adequately

    • C. 

      Growth will continue to accelerate, producing an ever-increasing steepness to the curve

    • D. 

      It is impossible to predict because microbes and humans are just too different

  • 7. 
    Place the following types of human societies in chronological order
    • A. 

      Feudalism, Colonialism, Hunter Gatherers, Pastoral, Agricultural

    • B. 

      Colonialism, Feudalism, Industrialism, Pastoral, Horticultural

    • C. 

      Agricultural, Feudalism, Industrialism, Horticultural, Modern

    • D. 

      Pastoral, Agricultural, Feudalism, Industrialism

  • 8. 
    Prior to the discovery of microbes, people's attitudes toward sickness and death were largely:
    • A. 

      Based on religious dogma

    • B. 

      Useful to the extent that they associated certain behaviors or situations with acquisition of illness

    • C. 

      Widely depicted in the art from those periods

    • D. 

      All of the above

    • E. 

      None of the above

  • 9. 
    It is generally recognized that the first truly scientific experiments occured
    • A. 

      In the 1500s as society tried to climb out of the dark ages and improve food production and distribution methods

    • B. 

      In the late 1700s and early 1800s as people attempted to prove that germs were responsible for disease

    • C. 

      During industrial colonialism as nations tried to develop better ships and cannons

    • D. 

      In the Stone Age as humans first developed hunting spears and flint arrowheads

  • 10. 
    During the colonial age, Europeans conquered nearly the entire globe. Why was this?
    • A. 

      They were endowed by their creator with superior skills, abilities, and intellect

    • B. 

      By an accident of history, they happened to be the first peoples to develop key technologies. This provided them with a strategic advantage known as the Founder's Effect

    • C. 

      Other continents were unpopulated at the time, so there was no competition

    • D. 

      Option4

  • 11. 
    Which of the following is not a characteristic of bacteria?
    • A. 

      They are prokaryotic

    • B. 

      They typically have peptidoglycan in their cell walls

    • C. 

      They all have the same shape

    • D. 

      They usually grow by binary fission

    • E. 

      They often have the ability to move

  • 12. 
    Recombinant DNA is 
    • A. 

      DNA is bacteria

    • B. 

      The study of how genes work

    • C. 

      The DNA resulting when genes of two different organisms are mixed

    • D. 

      The use of bacteria in the production of foods

    • E. 

      The production of proteins by genes

  • 13. 
    Which of the following statements is the best definition of biogenesis? 
    • A. 

      Non-living matter gives rise to living organisms

    • B. 

      Living cells can only arise from pre-existing cells

    • C. 

      A vital force is necessary for life

    • D. 

      Air is necessary for living organisms

    • E. 

      Microorganisms can be generated from nonliving matter

  • 14. 
    Shigella is a genus of bacteria and the aetiologic agent of dysentery. Under the microscope, Shigella is impossible to differentiate from other Gram-negative rods that are part of the normal intestinal flora. Which biochemical test is used to differentiate Shigella from these harmless bacteria? 
    • A. 

      The decarboxylation test

    • B. 

      Xylitol fermentation

    • C. 

      Gas production from lactose

    • D. 

      H2S production from peptone iron agar

    • E. 

      Motility

  • 15. 
    Which of the following is true about bionomial scientific names for organisms 
    • A. 

      They are composed of two names, a genus name and a species name

    • B. 

      They always reference the person who discovered the organism

    • C. 

      They have a very specific syntax; the first letter of both the genus and species name should be capitalized and both names should be italicized

    • D. 

      They have a very specific syntax; the first letter of the genus should be capitalized and both names should be italicized

    • E. 

      The discoverer can name an organism whatever she wants to

  • 16. 
    Which of the following statements about phylogenetic trees are true?
    • A. 

      They indicated the relatedness of a group of organisms

    • B. 

      The organisms at the far ends are most distantly related from each other

    • C. 

      The tree can be rotated at any node without losing accuracy

    • D. 

      Organisms with the same genus name are more closely related than organisms with different genus names

  • 17. 
    Which of the following statements are true regarding prokaryotes? 
    • A. 

      They are basically a big sack of chemicals without internal organelles

    • B. 

      While the genomic content is sequestered in a specific location called the nucleiod at most times, they lack a true, membrane-bound nucleus

    • C. 

      They are so small that it doesn't benefit them to be able to move around their environment. As a result, they are completely dependent upon environmental changes like ocean tides and river currents to move them from one location to another

    • D. 

      Their cell shape is mostly due to proteins on the outer surface called the S-layer

    • E. 

      There are five possible prokaryotic cell shapes; cocci, bacilli, vibrio, spirillum, and spirochete

  • 18. 
    Which of the following statements are true regarding metabolism?
    • A. 

      Enzymes are a group of proteins that are involved in almost all biologically important chemical reactions

    • B. 

      Aminopterins are a group of enzymes that are involved in almost all anabolic processes

    • C. 

      Hypoxanthines are a type of nucleic acid derived from purines and present in RNA

    • D. 

      Chlorophylls are a group of pigments that is involved in photosynthesis and respiration

    • E. 

      Carbohydrates are a type of sugar that is used as both a structural component of cells and as energy

  • 19. 
    Which of the following statements are true regarding cell shape?
    • A. 

      Cocci are rod-shaped bacterial cells

    • B. 

      Bacilli are only Gram negative

    • C. 

      Spiral shaped bacteria are formed when the cell wraps around a long flagellum that is located between the inner and outer membrane

    • D. 

      Spirochetes are only Gram negative

    • E. 

      The club-like shape of corynebacterium is very characteristic of pertussis and is used to diagnose the disease

  • 20. 
    How many bacteria can swim by using external organelles called
    • A. 

      Fins

    • B. 

      Fimbriae

    • C. 

      Mycelia

    • D. 

      Flagella

    • E. 

      Cilia

  • 21. 
    Organisms that derive nutrients form living hosts are called
    • A. 

      Commensals or normal flora

    • B. 

      Bacteria

    • C. 

      Decomposers

    • D. 

      Viruses

    • E. 

      Parasites

  • 22. 
    Protections from disease provided by vaccination, or by recovery from the disease itself, is called
    • A. 

      Immunity

    • B. 

      Protectively

    • C. 

      Susceptibility

    • D. 

      Virology

    • E. 

      Health

  • 23. 
    This term refers to the substance of the prokaryotic cell inside the plasma membrane 
    • A. 

      Cytoskeleton

    • B. 

      Nucleolis

    • C. 

      Plasmophere

    • D. 

      Guts

    • E. 

      Cytoplasm

  • 24. 
    The membrane bound organelle that is characteristic of eukaryotic cells and contains most of the cell's DNA is the
    • A. 

      Vacuole

    • B. 

      ER

    • C. 

      Ribosome

    • D. 

      Nucleus

    • E. 

      Golgi apparatus

  • 25. 
    The membrane bound organelle that is found throughout all three domains of life and is often used for storage and other diverse functions is called the
    • A. 

      Vacuole

    • B. 

      ER

    • C. 

      Ribosome

    • D. 

      Nucleus

    • E. 

      Golgi apparatus

  • 26. 
    _______ is the sum of all chemical reactions within a living organism
    • A. 

      Oxidation

    • B. 

      Reduction

    • C. 

      Metabolism

    • D. 

      Photosynthesis

    • E. 

      Catabolism

  • 27. 
    _____ is the set of all enzyme-regulated chemical reactions that release energy by breaking down complex organic compounds into simpler compounds
    • A. 

      Catabolism

    • B. 

      Anabolism

    • C. 

      Photosynthesis

    • D. 

      Phosphorylation

    • E. 

      Decomposition

  • 28. 
    _____ is the set of all enzyme-regulated and energy-requiring chemical reactions that build complex organic compounds from simpler compounds
    • A. 

      Catabolism

    • B. 

      Anabolism

    • C. 

      Photosynthesis

    • D. 

      Phosphorylation

    • E. 

      Decomposition

  • 29. 
    The vast majority of all living cells on earth belong to the domain ____. 
    • A. 

      Animalia

    • B. 

      Planta

    • C. 

      Bacteria

    • D. 

      Archaea

    • E. 

      Eukaryota

  • 30. 
    When an electron (e-) is removed from an atom or molecule, the reaction is said to be _____.
    • A. 

      Oxidative

    • B. 

      Reductive

    • C. 

      Electrical

    • D. 

      Transductive

    • E. 

      Efficient

  • 31. 
    During aerobic respiration, _______ serves as the final electron acceptor. 
    • A. 

      Nitrogen

    • B. 

      Carbon

    • C. 

      Oxygen

    • D. 

      Helium

    • E. 

      Osmium

  • 32. 
    During _______, the final electron acceptor is an organic compound. 
    • A. 

      Aerobic respiration

    • B. 

      Fermentation

    • C. 

      Anaerobic respiration

    • D. 

      Nitrogen fixation

    • E. 

      Carbon cycling

  • 33. 
    Organisms that use light as their primary energy source are called _____.
    • A. 

      Heterotrophs

    • B. 

      Chemotrophs

    • C. 

      Autotrophs

    • D. 

      Auxotrophs

    • E. 

      Phototrophs

  • 34. 
    Considering both energy and carbon source, most medically important microorganisms discussed in the textbook are _______. 
    • A. 

      Photoautotrophs

    • B. 

      Chemophototophs

    • C. 

      Photoheterotrophs

    • D. 

      Chemoautotrophs

    • E. 

      Chemoheterotrophs

  • 35. 
    _______ are non-cellular particles which obligate intracellular parasites of cells
    • A. 

      Algae

    • B. 

      Bacteria

    • C. 

      Viruses

    • D. 

      Protists

    • E. 

      Analids

  • 36. 
    Spherical bacterial cells arranged in clusters are described as ______.
    • A. 

      Dipllococci

    • B. 

      Streptococci

    • C. 

      Staphylobacilli

    • D. 

      Streptobacilli

    • E. 

      Staphylococci

  • 37. 
    Enzymes lower the _____ of a chemical reaction. 
    • A. 

      Catalysis barrier

    • B. 

      Activation energy

    • C. 

      Reaction energy

    • D. 

      Direction

    • E. 

      Reaction barrier

  • 38. 
    A holoenyzme includes a(n) _______ and a(n) __________. 
    • A. 

      Metal, cofactor

    • B. 

      Cofactor, active site

    • C. 

      Buffer, active site

    • D. 

      Apoenzyme, cofactor

    • E. 

      Apoenzyme, buffer

  • 39. 
    _________ is when the rate of a chemical reaction will not increase even if more substrate is added. 
    • A. 

      Stationary phase

    • B. 

      End stage activity

    • C. 

      Overload

    • D. 

      Permeation

    • E. 

      Saturation

  • 40. 
    Oxidative phosphorylation occurs in the _______ in prokaryotes and in the ________ of eukaryotes. 
    • A. 

      Plasma membrane, mitochondrial membrane

    • B. 

      Cytoplasm, cytoplasm

    • C. 

      Plasma membrane, cytoplasm

    • D. 

      Mitochondrial membrane, plasma membrane

    • E. 

      Plasma membrane, plasma membrane

  • 41. 
    The _______ is located near the nucleus, consist of two components, and plays a critical role in cell division. 
    • A. 

      Peroxisome

    • B. 

      Centrosome

    • C. 

      Chloroplast

    • D. 

      Division plane

    • E. 

      Endoplasmic reticulum

  • 42. 
    Helminth is a term that includes two major groups of parasitic worms. What are the names of those two groups?
    • A. 

      Fungi and Algae

    • B. 

      Archaea and Eukarya

    • C. 

      Flatworms and roundworms

    • D. 

      Roundworms and segmented worms

    • E. 

      Segmented worms and flatworms

  • 43. 
    In which cellular sites does protein synthesis occur?
    • A. 

      The nucleus in prokaryotes and the ribosomes in eukaryotes

    • B. 

      Vacuoles in prokaryotes and the golgi in eukaryotes

    • C. 

      Lysosomes in prokaryotes and the nucleus in eukaryotes

    • D. 

      The cytoplasm in prokaryotes and nucleus in eukaryotes

    • E. 

      The ribosomes in prokaryotes and the ribosomes in eukaryotes

  • 44. 
    The molecule that stores energy derived from catabolic reactions and later releases it to drive anabolic reactions
    • A. 

      DNA

    • B. 

      RNA

    • C. 

      LPS

    • D. 

      LTA

    • E. 

      ATP

  • 45. 
    Which industry was suffering staggering losses from a deadly pathogen, thus prompting scientists to formulate the germ theory of disease? 
    • A. 

      Silk production

    • B. 

      Naval warfare

    • C. 

      Dairy farms

    • D. 

      Cloth makers and tailors

    • E. 

      Medicine

  • 46. 
    A mechanism for movement (diffusion) of materials across the plasma membrane where substances move against the concentration gradient, from low to high concentration (requires ATP)
    • A. 

      Active diffusion

    • B. 

      Passive diffusion

    • C. 

      Direct diffusion

    • D. 

      Indirect diffusion

    • E. 

      Gradient diffusion

  • 47. 
    Which of the following reactions produces the most molecules of ATP during aerobic metabolism?
    • A. 

      Glucose ---> glucose 6-phosphate

    • B. 

      Phosphoenolypyruvic acid ---> pyruvic acid

    • C. 

      Glucose ---> pyretic acid

    • D. 

      Acetyl CoA ---> CO2 + H2O

    • E. 

      Succinic acid ---> fumaric acid

  • 48. 
    Which of the following processes does not generate ATP?
    • A. 

      Photophosphorylation

    • B. 

      The Calvin-Benson Cycle

    • C. 

      Oxidative phosphorylation

    • D. 

      Substrate-Level phosphorylation

    • E. 

      None of the above

  • 49. 
    Which of the following compounds has the greatest amount of energy for a cell?
    • A. 

      CO2

    • B. 

      ATP

    • C. 

      Glucose

    • D. 

      O2

    • E. 

      Lactic acid

  • 50. 
    Which of the following factors can influence enzymatic activity? (select all that apply)
    • A. 

      PH

    • B. 

      Temperature

    • C. 

      Substrate Concentration

    • D. 

      Isoelectric point

    • E. 

      Gravity