Bacteria Quiz

%CODE1%

Name: 

Bacteria

 

 

True/False
Indicate whether the sentence or statement is true or false.
1.
Gram-negative bacteria have a thick layer of peptidoglycan that stains purple.
2.
Bacteria lack nuclei and therefore also lack genetic material.
3.
Bacterial cells have membrane-bound organelles and chromosomes.
4.
Bacterial cells are usually much larger than eukaryotic cells.
5.
Bacteria are incapable of movement themselves; they can only get to new locations by growing toward them or by forming endospores and being carried in air or water.
6.
Some bacteria cannot survive in the presence of oxygen.
7.
When bacteria undergo nonreproductive genetic recombination, their bacterial chromosome is altered.
8.
Certain antibiotics have become ineffective against certain strains of bacteria. These bacteria have developed a resistance, which may be passed on from one generation of bacteria to the next.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
9.
The earliest known group of living organisms on Earth was
a.
viruses.
c.
bacteria.
b.
fungi.
d.
protists.
10.
Bacteria are the only organisms characterized as
a.
unicellular.
c.
eukaryotic.
b.
prokaryotic.
d.
photosynthetic.
11.
Bacteria can be classified according to their
a.
type of cell walls.
c.
Gram-staining characteristics.
b.
methods of obtaining energy.
d.
All of the above
bacteria1_files/i0140000.jpg
12.
Refer to the illustration above. Which of the diagrams has a shape like the Bacillus bacterial genus?
a.
Organism “A”
c.
Organism “C”
b.
Organism “B”
d.
None of the above
13.
When tested with a Gram stain, gram-positive bacteria are stained
a.
green.
c.
pink.
b.
yellow.
d.
purple.
14.
It is important to distinguish between Gram-positive and Gram-negative bacteria in diagnosing a bacterial infection because
a.
Gram-negative bacteria do not respond to many antibiotics.
b.
Gram-positive bacteria never cause fatal diseases.
c.
Gram-positive bacteria destroy antibiotics, preventing them from working.
d.
Gram-positive bacteria respond to many antibiotics.
      bacteria1_files/i0180000.jpg
15.
Refer to the illustration above. If the bacterium in the diagram is Gram-negative, what two types of molecules would be found in the structure labeled “B”?
a.
protein and lipids
c.
polysaccharides and lipids
b.
protein and polysaccharides
d.
nucleic acid and lipids
16.
Which of the following comparisons is incorrect?
      PROKARYOTES      EUKARYOTES
a.
smaller      larger
b.
circular chromosomes      linear chromosomes
c.
binary fission      mitosis
d.
chloroplasts      mitochondria
17.
Structures found in a eukaryotic cell but not in a bacterial cell are
a.
cell nuclei.
c.
membrane-bound organelles.
b.
chromosomes.
d.
All of the above
18.
Cell organelles that E. coli and other bacteria have in common with eukaryotes are
a.
chloroplasts.
c.
nuclei.
b.
mitochondria.
d.
ribosomes.
19.
Which of the following conditions would be unsuitable for any kind of bacteria to grow?
a.
temperature of 110ºC (230ºF)
c.
pH of 5
b.
absence of water
d.
absence of oxygen
20.
Which of the following is a fermentation product of bacteria?
a.
ricotta cheese
c.
yogurt
b.
ice cream
d.
cottage cheese

 

Check Your Work     Reset