Answers
1. All microorganisms are best defined as organisms that correct
answers:
A. cause human disease
B. lack a cell nucleus
C. are infectious particles
D. are too small to be seen with the unaided eye
E. can only be found growing in laboratories correct answers: D. are too small to
be seen with the unaided eye
2. Which of the following is a difference between prokaryotic and
eukaryotic cells?
A. prokaryotes have a cell wall, while eukaryotes do not
B. prokaryotes have multiple linear chromosomes while
eukaryotes have a single, circle chromosome
C. eukaryotes have no membrane bound organelles, while
prokaryotes do contain them
D. prokaryotes have a nucleus while eukaryotes do not
E. prokaryotes contain the bacteria and archea, while eukaryotes
include all other living organisms correct answers: E. prokaryotes contain the bacteria
and archea, while eukaryotes include all other living organisms
3. Which of the following is found in ALL bacterial cells?
A. flagella
B. cell wall
C. pili
D. spore
E. none of the above correct answers: E. none of the above
4. Microbes are beneficial in that they have been used to correct
answers:
A. treat waste water
B. clean up toxic spills
,C. decompose organic material
D. all of the above
E. none of the above correct answers: D. all of the above
5. Scientists use microbes to produce drugs, hormones, and
enzymes. This type of biotechnology involves the transfer of
foreign genetic material into a microbe, a process called correct
answers:
,A. recombinant DNA technology
B. gene therapy
C. bioremediation
D. polymerase chain reaction correct answers: A. recombinant DNA technology
6. Which of the following is the smallest cause of infectious disease?
A. protozoans
B. bacteria
C. helminths
D. viruses
E. none of the above correct answers: D. viruses
7. Gram negative bacteria differ from gram positive in that they
correct answers:
A. are non-pathogenic
B. do not have a cell wall
C. have flagella
D. have an outer membrane surrounding the cell wall
E. none of the above correct answers: D. have an outer membrane surrounding the cell wall
8. Which of the following is mismatched?
A. ribosomes - protein synthesis
B. inclusions - excess cell nutrients and materials
C. plasmids - genes essential for growth and metabolism
D. nucleoid - hereditary material
E.cytoplasm - dense, gelatinous solution correct answers: C. plasmids - genes
essential for growth and metabolism
9. Bacterial endospores are not produced by correct answers:
A. staphylococcus
B. bacillus
C. clostridium
D. all of the choices produce endospores correct answers: A. staphylococcus
10. Which of the following is a unique characteristic of viruses
that distinguishes them from other major groups of
microorganisms?
, A. cause human disease
B. lack a nucleus
C. cannot be seen without a microscope