Practice Quiz

Evolutionary Biology

Prokaryote Evolution

    True and False Questions

  1. Kingdom Monera, as defined at present, includes both bacteria and protista.

    a) True
    b) False

  2. Endospores are dehydrated cells in a state of dormancy.

    a) True
    b) False

  3. Obligate anaerobes are bacteria that may live without oxygen but will utilize it if available.

    a) True
    b) False

  4. Heterocysts are nitrogen-fixing cells of cyanobacteria.

    a) True
    b) False


    Multiple Choice Questions - Choose the best available answer.

  5. Prokaryotes have which of the following?

    a) membrane-surrounded organelles
    b) an organized nucleus
    c) mitochondria
    d) ribosomes

  6. How old are some of the oldest deposits in which fossils of bacteria have been found?

    a) 2.5 million years old
    b) 3.5 millions years old
    c) 3.5 billion years old
    d) 4.6 billion years old
    e) none of the above

  7. A bacillus is

    a) a spherical cell
    b) a rod-like cell
    c) a comma-shaped cell
    d) a spiral cell

  8. As a generalization, the smallest prokaryotes are the

    a) cyanobacteria
    b) spirochaetes
    c) mycoplasmas
    d) myxobacteria

  9. Bacterial movement can occur via

    a) flagellum action
    b) sweeping by cilia, or by gliding
    c) flagellum action, or by gliding
    d) flagellum action, or sweeping by cilia, or by gliding

  10. The most common mode of reproduction among bacteria is

    a) sexual, via fission
    b) asexual, via fission
    c) sexual, via conjugation
    d) asexual, via conjugation

  11. Decomposers are examples of

    a) heterotrophs
    b) photoautotrophs
    c) chemoautotrophs
    d) parasites
    e) none of the above

  12. Photoautotrophic bacteria synthesize their essential molecules from simple

    a) organic molecules, using light energy
    b) inorganic molecules, using light energy
    c) inorganic molecules, using chemical energy
    d) organic molecules, using chemical energy
    e) none of the above

  13. Bacteria that synthesize their essential molecules from inorganic substances, using energy derived from chemical reaction they bring about, are termed

    a) chemoautotrophs
    b) photoautotrophs
    c) pathogens
    d) decomposers
    e) none of the above

  14. Which of the following are posioned by O2?

    a) obligate aerobes
    b) facultaline anaerobes
    c) obligate anaerobes
    d) photoautotrophs
    e) heterotrophs

  15. Nitrogen-fixing bacteria characteristically do whic of the following?

    a) oxidize sulfur compounds to nitrogen
    b) reduce nitrogen compounds to sulfur
    c) reduce atmospheric nitrogen to ammonia
    d) reduce ammonia to nitrogen gas

  16. Methanogens form the largest group of

    a) archaebacteria
    b) eubacteria
    c) richettsias
    d) viruses

  17. Bacteria lack the following

    a) nuclear membrane
    b) pili
    c) flagella
    d) cell wall
    e) ribosomes

  18. According to the endosymbiotic hypothesis which of the following is correct?

    a) cyanobacteria became chloroplasts
    b) halophiles became mitochondria
    c) archeobacteria became thermophiles
    d) bacterial flagella become 9 + 2
    e) purple sulfur bacteria became flagella


You have: answers correct out of a possible eighteen.

The question numbers that were not correct are:

Instructor: Professor Clyde Herreid,