1) Which of the following would NOT be expected to be present in a biochemical a
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Question
1) Which of the following would NOT be expected to be present in a biochemical analysis of an archaeal cell?a) branched hydrocarbons
b) membrane proteins
c) cytoplasmic membranes
d) peptidoglycan
2) Lipid-soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes?
a) group translocation
b) osmosis
c) active transport
d) diffusion
e) facilitated diffusion
3) Regarding membrane linkages, which statement is TRUE?
a) Bacteria and Eukarya have ester linkages; Archaea have ether linkages.
b) Archaea have ester linkages; Eukarya have ether linkages.
c) Eukarya have ester linkages; Bacteria have ether linkages.
d) Bacteria and Eukarya have ester linkages; Archaea linkages are not yet
known.
4)Organisms most likely to be found in extreme environments are
a) Archaea.
b) Bacteria.
c) fungi.
d) viruses.
5)The Gram stain works because of differences in the ________ of bacteria.
a) cell membranes
b) genetic characteristics
c) cell walls
d) antigens
e) capsules
6)Disease-causing prokaryotes are found exclusively among the
a)Archaea.
b)Bacteria.
c)fungi.
d)viruses.
7)In which of the following habitats might an extremophile be isolated?
a)garden soil at neutral pH
b)boiling hot springs
c)human skin
d)freshwater pond
8)Cyanobacteria are most closely related to the
a)gram-negative Bacteria.
b)gram-positive Bacteria.
c)Archaea.
d)Eukarya.
9)Mechanisms for controlling gene expression are found
a)only in eukaryotes.
b)only in prokaryotes.
c)in some but not all prokaryotes and in some but not all eukaryotes.
d)in all cells, prokaryotic and eukaryotic.
10) Which of the following is(are) (a) magnifying lens(es)?
a)dark-field stop
b)ocular
c)objective
d)condenser
e)both the objective and the ocular
11) The three domains proposed by Carl Woese are the Archaea, the Eukarya, and the Monera.
True
False
12) The presence of membrane-enclosed organelles is a characteristic of
a)prokaryotic cells.
b)eukaryotic cells.
c)all cells.
d)viruses.
13) If a microbiologist omitted the decolorizer from a Gram-stained smear, which of the following would happen?
a)All cells in the smear would be purple.
b)All cells in the smear would be colorless.
c)Gram-positive cells would be pink and Gram-negative cells would be purple.
d)All cells in the smear would be pink.
14) Which organism has unusual cell walls, can reassemble its chromosome after it has been damaged, and has an innate resistance to high levels of radiation?
a)Chlamydia
b)Pseudomonas
c)Deinococcus
d)Lactobacillus
15)A resolution of 1 µm would be better than a resolution of 0.5 µm.
True
False
16)Bacterial cells are usually a few __________ in size.
a)millimeters (mm)
b)centimeters (cm)
c)micrometers (µm)
d)meters (m)
e)nanometers (nm)
17)What type of energy-yielding metabolism is found ONLY in prokaryotes?
a) chemoorganotrophy
b) phototrophy
c) chemolithotrophy
d) autotrophy
Explanation / Answer
1. membrane proteins 2. diffusion 3. Bacteria and Eukarya have ester linkages; Archaea have ether linkages. 4. Archaea. 5. cell walls 6. Bacteria. 7. boiling hot springs 8. Eukarya. 9. only in eukaryotes. 10. 11. False 12. eukaryotic cells. 13. All cells in the smear would be purple. 14. Deinococcus 15. 16. millimeters (mm) 17. chemolithotrophy
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