Standard Unit – Microbiology Quiz 3
The key terms of Microbiology Quiz include Standard Unit, Glucose, maltose, Molecule.
What is the standard metric unit for 1 x 10-9m?
Nanometer – correct
micrometer
millimeter
Angstrom
The hydrolysis of starch into glucose and maltose molecules is an example of;
dehydration synthesis
catabolism – correct
cheap starch
anabolism
What is an enzyme?
a catalyst – correct
a substrate
a lipid
none of these
How do enzymes speed up reactions?
Enzymes increase the temperature of the solution
Enzymes add protons to the system
They lower the energy of activation – correct
Enzymes add energy to the reaction
If I am looking through a 10X ocular and 10X objective, what is the total magnification?
100X – correct
10X
20X
1000X
What is contrast?
differences in light intensity – correct
increase in apparent size
resolution
depth of field
What is resolution?
ability to distinguish two closely spaced points – correct
increase in apparent size
differences in light intensity
magnification
Which of these types of microscope can increase the contrast of a specimen without staining it?
all of these – correct
dark field
phase contrast
DIC
Which of these types of microscopes will give me the best resolution of a thick specimen?
con focal – correct
phase contrast
epifluorescence
transmission electron
The limit of useful magnification of a microscope using white light to iluminate the specimen is about
1000X – correct
10,000X
100x
there is no limt
Which of these is an advantage of epifluorescence microscopy?
multiple staining – correct
resolution of thick specimens
do not need to stain specimen
very inexpensive
The principle advantage of electron microscopes over light microscopes is
Much higher useful magnification – correct
ease of sample preparation
better resolution of thick specimens
specimens do not have to be stained
What is the standard metric unit for 1 x 10-9m?
Nanometer – correct
micrometer
millimeter
Angstrom
The hydrolysis of starch into glucose and maltose molecules is an example of;
dehydration synthesis
catabolism – correct
cheap starch
anabolism
What is an enzyme?
a catalyst – correct
a substrate
a lipid
none of these
How do enzymes speed up reactions?
Enzymes increase the temperature of the solution
Enzymes add protons to the system
They lower the energy of activation – correct
Enzymes add energy to the reaction