Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and
molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown
in a nutrient medium containing the radioisotope 35S. After a 48-hour incubation, the
35S would most likely be found in the S. cerevisiae's
A. Water
B. Nucleic Acids
C. Proteins
D. Lipids
E. Carbohydrates
Give this one a try later!
, C. Proteins
A student creates a Gram Stain on a bacterial sample that has a mix of Gram Negative
and Gram Positive organisms. The student accidentally forgets the decolorizer step.
What would the outcome of the Gram Stain be?
A. All organisms would appear Purple (Gram Positive)
B. All organisms would appear Colorless
C. All organisms would appear Pink (Gram Negative)
D. The Gram Stain would show Pink (Gram Negative Bacteria) and Purple (Gram
Positive bacteria)
Give this one a try later!
A. All organisms would appear Purple (Gram Positive)
Which step in the Gram Stain is the Critical step in differentiating Gram Positive cells
from Gram Negative cells?
A. Iodine
B. Safranin
C. Crystal Violet
D. Alcohol-Acetone
Give this one a try later!
D. Alcohol-Acetone
, All of the following factors contribute to the threat of Emerging Infectious Diseases
(EIDs) EXCEPT:
A. Spread of known diseases to new geographic regions or populations by modern
transportation
B. Vaccinations that control epidemiological spread
C. Evolutionary changes to existing organisms through genetic changes
D. Increased human exposure to new, unusual infectious agents in areas that are
undergoing ecological changes, such as deforestation and construction
Give this one a try later!
B. Vaccinations that control epidemiologic spread
Each of the following organisms would be considered a microbe EXCEPT
A. Protozoan
B. Bacterium
C. Virus
D. Mushrooms
E. Yeast
Give this one a try later!
D. Mushrooms
Structurally, ATP is most like which type of molecule?
molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown
in a nutrient medium containing the radioisotope 35S. After a 48-hour incubation, the
35S would most likely be found in the S. cerevisiae's
A. Water
B. Nucleic Acids
C. Proteins
D. Lipids
E. Carbohydrates
Give this one a try later!
, C. Proteins
A student creates a Gram Stain on a bacterial sample that has a mix of Gram Negative
and Gram Positive organisms. The student accidentally forgets the decolorizer step.
What would the outcome of the Gram Stain be?
A. All organisms would appear Purple (Gram Positive)
B. All organisms would appear Colorless
C. All organisms would appear Pink (Gram Negative)
D. The Gram Stain would show Pink (Gram Negative Bacteria) and Purple (Gram
Positive bacteria)
Give this one a try later!
A. All organisms would appear Purple (Gram Positive)
Which step in the Gram Stain is the Critical step in differentiating Gram Positive cells
from Gram Negative cells?
A. Iodine
B. Safranin
C. Crystal Violet
D. Alcohol-Acetone
Give this one a try later!
D. Alcohol-Acetone
, All of the following factors contribute to the threat of Emerging Infectious Diseases
(EIDs) EXCEPT:
A. Spread of known diseases to new geographic regions or populations by modern
transportation
B. Vaccinations that control epidemiological spread
C. Evolutionary changes to existing organisms through genetic changes
D. Increased human exposure to new, unusual infectious agents in areas that are
undergoing ecological changes, such as deforestation and construction
Give this one a try later!
B. Vaccinations that control epidemiologic spread
Each of the following organisms would be considered a microbe EXCEPT
A. Protozoan
B. Bacterium
C. Virus
D. Mushrooms
E. Yeast
Give this one a try later!
D. Mushrooms
Structurally, ATP is most like which type of molecule?
