Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
1. Organisms called parasites are ______. always harmful to their
Select one: host
a. always harmful to their host
b. the decomposers in ecosystems
c. always viruses
d. free-living
2. Trees of life that illustrate the phylogenetic relation- a. morphology; nucleic
ships of all organisms were traditionally based on acid sequences
______; newer methods for determining phylogeny rely
on ______.
Select one:
a. morphology; nucleic acid sequences
b. nucleic acid sequences; morphology
c. morphology; virology
d. morphology; nutritional requirements
e. nucleic acid sequences; microbiomes
3. What is the maximum number of electrons in the first a. 2
energy shell of an atom?
Select one:
a. 2
b. 4
c. 8
d. 18
e. 32
4. Which of the following is not true about enzymes? Enzymes have high-ener-
Select one: gy bonds between phos-
a. Enzymes are found in all cells. phates
b. Enzymes are catalysts.
c. Enzymes participate in the cell's chemical reactions.
, Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
d. Enzymes can be denaturated by heat and other
agents.
e. Enzymes have high-energy bonds between phos-
phates
5. NASA has published a list of criteria for identifying fos- a. Cell size of 0.5 to 2 mi-
sil bacteria in samples from Mars, as part of a search crons
for evidence of life. Which of the following is good
evidence for the presence of bacterial cells?
Select one:
a. Cell size of 0.5 to 2 microns
b. Three-dimensional organization of cells in a star-
burst pattern
c. Absence of carbon in the material
d. No evidence of water in the surrounding mineral
6. Which type of medium would be the best choice when a. Transport medium
shipping a sample of bacteria from a clinic to a labo-
ratory for testing?
Select one:
a. Transport medium
b. Eosin-methylene blue agar
c. Blood agar
d. Thioglycolate medium
7. The orderly arrangement of organisms into a hierar- a. classification
chy of taxa is called ______.
Select one:
a. classification
b. identification
c. nomenclature
, Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
d. experimentation
e. biotechnology
8. A microbiologist inoculates Staphylococcus aureus b. The culture was conta-
into a culture medium. Following incubation, both minated.
Staphylococcus aureus and Staphylococcus epider-
midis are determined to be growing in this culture.
What is the most likely explanation?
Select one:
a. The microbiologist used too much inoculum.
b. The culture was contaminated.
c. The incubation temperature was incorrect.
d. The culture medium was selective.
e. The culture medium was differential.
9. Disease-causing microorganisms are called ______. c. pathogens
Select one:
a. decomposers
b. bacteria
c. pathogens
d. eukaryotes
e. fermenters
10. Which scientific field is involved in the identification, b. Taxonomy
classification, and naming of organisms?
Select one:
a. Nomenclature
b. Taxonomy
c. Phylogeny
d. Pathology
e. Epidemiology
11.
, Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
Covalent bonds
Select one:
a. result from losing electrons.
b. are always polar.
c. are always nonpolar.
d. result from sharing electrons.
e. result from gaining electrons.
12. Using microbes to detoxify a site contaminated with bioremediation
heavy metals is an example of ______.
Select one:
a. biotechnology
b. bioremediation
c. decomposition
d. immunology
e. epidemiology
13. Which of the following statements is incorrect regard- a. The interaction between
ing protein structure? various R groups of amino
Select one: acids
a. The interaction between various R groups of amino
acids determines the primary structure of a protein.
b. Beta-pleated sheets are a type of protein secondary
structure.
c. The folding of a protein to form its active site cre-
ates its tertiary structure.
d. Proteins, such as antibodies that are comprised of
multiple polypeptide chains, have quaternary struc-
ture.
14. A scientist who studies the influence of microbes in a. geomicrobiologist
the formation of caves is called a(n) ______.
Study online at https://quizlet.com/_73v4sk
1. Organisms called parasites are ______. always harmful to their
Select one: host
a. always harmful to their host
b. the decomposers in ecosystems
c. always viruses
d. free-living
2. Trees of life that illustrate the phylogenetic relation- a. morphology; nucleic
ships of all organisms were traditionally based on acid sequences
______; newer methods for determining phylogeny rely
on ______.
Select one:
a. morphology; nucleic acid sequences
b. nucleic acid sequences; morphology
c. morphology; virology
d. morphology; nutritional requirements
e. nucleic acid sequences; microbiomes
3. What is the maximum number of electrons in the first a. 2
energy shell of an atom?
Select one:
a. 2
b. 4
c. 8
d. 18
e. 32
4. Which of the following is not true about enzymes? Enzymes have high-ener-
Select one: gy bonds between phos-
a. Enzymes are found in all cells. phates
b. Enzymes are catalysts.
c. Enzymes participate in the cell's chemical reactions.
, Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
d. Enzymes can be denaturated by heat and other
agents.
e. Enzymes have high-energy bonds between phos-
phates
5. NASA has published a list of criteria for identifying fos- a. Cell size of 0.5 to 2 mi-
sil bacteria in samples from Mars, as part of a search crons
for evidence of life. Which of the following is good
evidence for the presence of bacterial cells?
Select one:
a. Cell size of 0.5 to 2 microns
b. Three-dimensional organization of cells in a star-
burst pattern
c. Absence of carbon in the material
d. No evidence of water in the surrounding mineral
6. Which type of medium would be the best choice when a. Transport medium
shipping a sample of bacteria from a clinic to a labo-
ratory for testing?
Select one:
a. Transport medium
b. Eosin-methylene blue agar
c. Blood agar
d. Thioglycolate medium
7. The orderly arrangement of organisms into a hierar- a. classification
chy of taxa is called ______.
Select one:
a. classification
b. identification
c. nomenclature
, Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
d. experimentation
e. biotechnology
8. A microbiologist inoculates Staphylococcus aureus b. The culture was conta-
into a culture medium. Following incubation, both minated.
Staphylococcus aureus and Staphylococcus epider-
midis are determined to be growing in this culture.
What is the most likely explanation?
Select one:
a. The microbiologist used too much inoculum.
b. The culture was contaminated.
c. The incubation temperature was incorrect.
d. The culture medium was selective.
e. The culture medium was differential.
9. Disease-causing microorganisms are called ______. c. pathogens
Select one:
a. decomposers
b. bacteria
c. pathogens
d. eukaryotes
e. fermenters
10. Which scientific field is involved in the identification, b. Taxonomy
classification, and naming of organisms?
Select one:
a. Nomenclature
b. Taxonomy
c. Phylogeny
d. Pathology
e. Epidemiology
11.
, Bio 250 straighterline test 1 prep
Study online at https://quizlet.com/_73v4sk
Covalent bonds
Select one:
a. result from losing electrons.
b. are always polar.
c. are always nonpolar.
d. result from sharing electrons.
e. result from gaining electrons.
12. Using microbes to detoxify a site contaminated with bioremediation
heavy metals is an example of ______.
Select one:
a. biotechnology
b. bioremediation
c. decomposition
d. immunology
e. epidemiology
13. Which of the following statements is incorrect regard- a. The interaction between
ing protein structure? various R groups of amino
Select one: acids
a. The interaction between various R groups of amino
acids determines the primary structure of a protein.
b. Beta-pleated sheets are a type of protein secondary
structure.
c. The folding of a protein to form its active site cre-
ates its tertiary structure.
d. Proteins, such as antibodies that are comprised of
multiple polypeptide chains, have quaternary struc-
ture.
14. A scientist who studies the influence of microbes in a. geomicrobiologist
the formation of caves is called a(n) ______.
