Microbiology 3400 (TTU Exam 1 Lab)
Exam Questions & Answers (Grade
A+)
TSA -
correct answer ✅Tryptic Soy Agar
TSB -
correct answer ✅Tryptic Soy Broth
Is TSA a liquid or a solid? -
correct answer ✅solid
Is TSB a liquid or a solid? -
correct answer ✅liquid
What does aseptic mean? -
correct answer ✅not bacteria
Serratia marcescens -
correct answer ✅Gram-negative bacillus that occurs naturally in
soil and water and produces red pigment at room temperature.
,Microbiology 3400 (TTU Exam 1 Lab)
Exam Questions & Answers (Grade
A+)
Bacillus -
correct answer ✅rod-shaped bacterium
What does It mean when there are small white floats at the top of
your TSB broth? -
correct answer ✅The bacteria used a lot of oxygen
Aseptic technique -
correct answer ✅A method that involves target-specific practices
and procedures under suitably controlled conditions to reduce the
contamination from microbes
Pure Culture (or axenic) -
correct answer ✅culture is a population of cells or multicellular
organisms growing in the absence of other species or types
Streak Plate -
correct answer ✅Mechanically separation of organisms
Escherichia Coli -
correct answer ✅Gram-negative, facultative anaerobic, rod-
, Microbiology 3400 (TTU Exam 1 Lab)
Exam Questions & Answers (Grade
A+)
shaped, coliform bacterium of the genus Escherichia that is
commonly found in the lower intestine of warm-blooded organisms
BHI -
correct answer ✅Brain Heart Infusion (agar)
A colony contains only descendants -
correct answer ✅single, asexually reproducing cell. It becomes a
pure culture.
What is streak plating and why is it used? -
correct answer ✅It is the mechanical separation of organisms.
They are used to obtain isolated colonies from an inoculum.
How do you define a colony in simple terms? -
correct answer ✅a visible mass of microorganisms all originating
from a single mother cell
Microorganisms -
correct answer ✅an organism too small to see with a naked eye
Exam Questions & Answers (Grade
A+)
TSA -
correct answer ✅Tryptic Soy Agar
TSB -
correct answer ✅Tryptic Soy Broth
Is TSA a liquid or a solid? -
correct answer ✅solid
Is TSB a liquid or a solid? -
correct answer ✅liquid
What does aseptic mean? -
correct answer ✅not bacteria
Serratia marcescens -
correct answer ✅Gram-negative bacillus that occurs naturally in
soil and water and produces red pigment at room temperature.
,Microbiology 3400 (TTU Exam 1 Lab)
Exam Questions & Answers (Grade
A+)
Bacillus -
correct answer ✅rod-shaped bacterium
What does It mean when there are small white floats at the top of
your TSB broth? -
correct answer ✅The bacteria used a lot of oxygen
Aseptic technique -
correct answer ✅A method that involves target-specific practices
and procedures under suitably controlled conditions to reduce the
contamination from microbes
Pure Culture (or axenic) -
correct answer ✅culture is a population of cells or multicellular
organisms growing in the absence of other species or types
Streak Plate -
correct answer ✅Mechanically separation of organisms
Escherichia Coli -
correct answer ✅Gram-negative, facultative anaerobic, rod-
, Microbiology 3400 (TTU Exam 1 Lab)
Exam Questions & Answers (Grade
A+)
shaped, coliform bacterium of the genus Escherichia that is
commonly found in the lower intestine of warm-blooded organisms
BHI -
correct answer ✅Brain Heart Infusion (agar)
A colony contains only descendants -
correct answer ✅single, asexually reproducing cell. It becomes a
pure culture.
What is streak plating and why is it used? -
correct answer ✅It is the mechanical separation of organisms.
They are used to obtain isolated colonies from an inoculum.
How do you define a colony in simple terms? -
correct answer ✅a visible mass of microorganisms all originating
from a single mother cell
Microorganisms -
correct answer ✅an organism too small to see with a naked eye
