1|Page
Microbiology Exam 2, Community College of Rhode
Island (Instructor Vito)||Verified Exam!!!||, 2026/2027 –
Practice Assessment||Newest Exam!!!
Micooraginams that grow best at temperatures between
45-70 degrees celsius are called:
A. Thermophiles
B. Psycrophiles
C. Thermophobes
D. Mesophiles - Answer-A. Thermophiles
Which of the following is an advantage of the standard
plate count?
A. can readily count cells that fomr aggregates
B. determines the number of viable cells
C. can be performed on very dilute samples, such as lake
water
D. provides immediate results
E. can be used to count heat-sensitive bacteria - Answer-
B. determines the number of viable cells
,2|Page
The total number of viable microorganisms remains
constant in stationary phase because:
A. there is a balance between cell division and cell death
B. there is a cessation of cell division even though the
cells may remain metabolically activie
C. either a or b
D. niether a or b - Answer-C. either a or b
Which of the following is NOT a direct method to
measuree microbial growth?
A. direct microscopic count
B. standard plate count
C. filtration on a support membrane followed by incubation
on medium
D. metabolic activity
E. most probably number - Answer-D. metabolic activity
Elements that are required in relatively large amounts by
microorganisms are called...
A.multivitamins
B. meganurtients
C. macronutrients
, 3|Page
D. macromolecules - Answer-C. macronutrients
When a microorganism is placed in a(n) ________
solution, water will eneter into the cell and cause it to burst
unless something is done to prevent it.
A. hypotonic
B. isotonic
C. hypertonic
D. osomotic - Answer-A. hypotonic
If cells are grown in media containing amino acids labeled
with radioactive nitrogen, most of the radioactivity will be
found in the cells...
A. DNA
B. proteins
C. phospholipids
D. DNA and proteins
E. DNa and phosophlipids - Answer-D. DNA and proteins
Microbiology Exam 2, Community College of Rhode
Island (Instructor Vito)||Verified Exam!!!||, 2026/2027 –
Practice Assessment||Newest Exam!!!
Micooraginams that grow best at temperatures between
45-70 degrees celsius are called:
A. Thermophiles
B. Psycrophiles
C. Thermophobes
D. Mesophiles - Answer-A. Thermophiles
Which of the following is an advantage of the standard
plate count?
A. can readily count cells that fomr aggregates
B. determines the number of viable cells
C. can be performed on very dilute samples, such as lake
water
D. provides immediate results
E. can be used to count heat-sensitive bacteria - Answer-
B. determines the number of viable cells
,2|Page
The total number of viable microorganisms remains
constant in stationary phase because:
A. there is a balance between cell division and cell death
B. there is a cessation of cell division even though the
cells may remain metabolically activie
C. either a or b
D. niether a or b - Answer-C. either a or b
Which of the following is NOT a direct method to
measuree microbial growth?
A. direct microscopic count
B. standard plate count
C. filtration on a support membrane followed by incubation
on medium
D. metabolic activity
E. most probably number - Answer-D. metabolic activity
Elements that are required in relatively large amounts by
microorganisms are called...
A.multivitamins
B. meganurtients
C. macronutrients
, 3|Page
D. macromolecules - Answer-C. macronutrients
When a microorganism is placed in a(n) ________
solution, water will eneter into the cell and cause it to burst
unless something is done to prevent it.
A. hypotonic
B. isotonic
C. hypertonic
D. osomotic - Answer-A. hypotonic
If cells are grown in media containing amino acids labeled
with radioactive nitrogen, most of the radioactivity will be
found in the cells...
A. DNA
B. proteins
C. phospholipids
D. DNA and proteins
E. DNa and phosophlipids - Answer-D. DNA and proteins
