Microbes and Society Final UPDATED ACTUAL Questions and CORRECT Answers
Course
Microbes and Society
Institution
Microbes And Society
Microbes and Society Final UPDATED
ACTUAL Questions and CORRECT
Answers
Spontaneous generation is the belief that - CORRECT ANSWER- living things arise
from nonliving matter
A solution of pH 7 compared to a solution of pH 9 - CORRECT ANSWER- has more H+
ions
The alpha helix and beta plea...
Microbes and Society Final UPDATED
ACTUAL Questions and CORRECT
Answers
Spontaneous generation is the belief that - CORRECT ANSWER✔✔- living things arise
from nonliving matter
A solution of pH 7 compared to a solution of pH 9 - CORRECT ANSWER✔✔- has more H+
ions
The alpha helix and beta pleated sheet are examples of - CORRECT ANSWER✔✔-
secondary structure
A student forgot to label a beaker containing a DNA solution and a beaker containing a
glucose solution. If chemical analysis was performed to identify the contents of each beaker,
which of the following would be found in the beaker of DNA but not in the beaker with
glucose? - CORRECT ANSWER✔✔- nitrogen and phosphorous atoms
What part of a phospholipid forms hydrophobic tails? - CORRECT ANSWER✔✔- fatty
acids
All of the following are diameters of cells that would be resolved in a microscope with a limit
of resolution 0.2 um - CORRECT ANSWER✔✔- 0.1 um
The type of microscope in which you would see brightly illuminated specimens against a
black background is - CORRECT ANSWER✔✔- dark-field
The building blocks of an enzyme are - CORRECT ANSWER✔✔- amino acids
All of the following are lipids except - CORRECT ANSWER✔✔- starch
Cations are - CORRECT ANSWER✔✔- capable of forming ionic bonds and anions
,This microscope is the most widely used and shows cells against a bright background -
CORRECT ANSWER✔✔- bright-field
If a microbiologist is studying a specimen at a total magnification of 950x, what is the
magnifying power of the objective lens if the ocular lens is 10x? - CORRECT ANSWER✔✔-
95x
The type of chemical bond linking amino acids together is a - CORRECT ANSWER✔✔-
peptide bond
All of the following are correct about prokaryotes except - CORRECT ANSWER✔✔- they
have organelles
T/F: A covalent bond is formed between an anion and a cation. - CORRECT ANSWER✔✔-
False
The primary purpose of staining cells on a microscope slide is to - CORRECT
ANSWER✔✔- add contrast in order to see them better
The Dutch merchant who made and used quality magnifying lenses to see and record
microorganisms was - CORRECT ANSWER✔✔- Antonie van Leeuwenhoek
How many times more acidic is a solution with a pH of 3 than a solution with a pH of 6? -
CORRECT ANSWER✔✔- 1000
All of the following are monosaccharides except - CORRECT ANSWER✔✔- starch
All of the following are processes that define life except - CORRECT ANSWER✔✔- ability
to invade host cells
T/F: Once a true organism is assigned to a particular taxonomic hierarchy, it is permanent and
cannot be revised - CORRECT ANSWER✔✔- False
,Water molecules are nonpolar molecules - CORRECT ANSWER✔✔- False
Why is oil of immersion often used when viewing specimens under the microscope? -
CORRECT ANSWER✔✔- to increase the resolution
Which of the following is a taxon that contains all the other taxa? - CORRECT
ANSWER✔✔- kingdom
T/F: Members of the same species share many more characteristics compared to those shared
by members of the same kingdom. - CORRECT ANSWER✔✔- True
T/F: Nucleic acids have primary, secondary, tertiary, and quaternary levels of organization. -
CORRECT ANSWER✔✔- False
T/F: Only charged atoms can form ionic bonds - CORRECT ANSWER✔✔- True
The Gram stain, acid-fast stain, and endospore stain have the following in common: -
CORRECT ANSWER✔✔- are differential stains
T/F: All proteins are enzymes - CORRECT ANSWER✔✔- False
Which amino acid contains sulfur atoms that form covalent disulfide bonds in its tertiary
structure? - CORRECT ANSWER✔✔- cysteine
All of the following pertain to the fluorescence microscope except it - CORRECT
ANSWER✔✔- uses electrons to produce a specimen image
Which is not true about enzymes? - CORRECT ANSWER✔✔- have high-energy bonds
between phosphates
, The bending of light rays as they pass from one medium to another is called refraction -
CORRECT ANSWER✔✔- True
A microbiologist makes a fixed smear of bacterial cells and stains them with methylene blue.
All the cells appear blue under the oil lens. This is an example of - CORRECT
ANSWER✔✔- simple staining
Which of the following characteristics refers to the microscope's ability to show two separate
entities as separate and distinct? - CORRECT ANSWER✔✔- resolving power
The smallest and most significant taxon is - CORRECT ANSWER✔✔- species
Koch's postulates are criteria used to establish that - CORRECT ANSWER✔✔- a specific
microbe is the cause of a specific disease
Which of the following would have glycosidic bonds? - CORRECT ANSWER✔✔-
polysaccharides
The only part of an amino acid that differs from the other amino acids is its R group -
CORRECT ANSWER✔✔- True
Select the correct descending taxonomic hierarchy: - CORRECT ANSWER✔✔- family,
genus, species
Which pertains to DNA but not to RNA? - CORRECT ANSWER✔✔- contains thymine
Which of the following magnifies the specimen to produce the real image of the specimen? -
CORRECT ANSWER✔✔- objective lens
An amino acid contains all of the following except - CORRECT ANSWER✔✔- a nitrogen
base
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