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Microbiology Exam I Questions and Answers
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Microbiology Exam I Questions and Answers
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Microbiology Exam I Questions andAnswers
Analysis of DNA sequences reveals:
A)The ancient convergence of two cell types (prokaryotes and eukaryotes)
B) That prokaryotes and eukaryotes evolved from a common ancestral cell
C) That bacteria share a common ancestor with archaea but not with eukarya
D) That prokaryotes are cells with a nucleus
E) That the genome of Haemophilus influenzae has about 2 billion base pairs - Correct
Answers -B
Fluorescence microscopy using florophore-conjugated antibodies is referred to as:
A) Immunoflorescence
B)Autoflorescence
C) Confocal microscopy
D)Dark-field microscopy
E) Chemical imaging microscopy - Correct Answers -A
Genetic analysis of cells complementing cell fractionation are all TRUE EXCEPT:
A) It can be used to identify which genes and proteins are involved in a process
B) It can be used by identifying phenotypes under a microscope
C) It can be used to identify the exact change in protein sequences giving a particular
phenotype
D) Has never been used to study FtsZ
E) It can be used to study cell division - Correct Answers -D
Semmelweis and Lister noted that many of their patients' deaths were due to:
A) Maggots
B) E. coli
C) Chlorine
D) pathogen transmission by doctors
E) Staph - Correct Answers -D
Which of the folllowing statements regarding microbial cells is FALSE?
A) Microbial cells aquire food, gain energy to grow and respond to change
B) Single-celled organisms need a microscope to see them but some bacteria can be
seen with the naked eye
, C) Microbes function as individual entities
D) Many microbes form complex mulitcelluar assemblages
E) Viruses are not considered microbial cells - Correct Answers -C
What did van Leewenhoek discover microscopy before and after drinking hot
beverages?
A) heat did not kill microbes
B) heat killed microbes
C) heat did not kill algae
D) Caffeine killed microbes
E) the existence of spiral-shaped microbes - Correct Answers -B
A rod-shaped microbe is called:
A) bacillus
B) coccus
C) vibrio
D) strepto
E) spirochete - Correct Answers -A
Resolution is the smallest distance by which 2 objects can be ___ and still be ___.
A) magnified, distinguished
B) separated, distinguished
C) magnified, separated
D) separated, detected
E) reflected, distinguished - Correct Answers -B
Which series is smallest to largest in size:
A) Virus-bacterium-RBC-paramecium
B) ribosome-virus-bacterium-paramecium
C) Virus-bacterium-paramecium-RBC
D) A & B
E) B& C - Correct Answers -D
The third amino acid in the peptidoglycan crosslinking chain is m-diaminopimelic acid
because this amino acid must:
A) Be postively charged for a salt bridge to form
B) Be hydrophilic
C) have a free amino group for peptide bond formation
D) HHave a large R-side chain to fill the space in the cell wall
E)be hydrophobic - Correct Answers -C
Cells must be broken open in order to fractionate the components. Each can be used in
bacterial cell breakage EXCEPT:
A) french press
B) lysozyme
C)mild detergent
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