Microbiology 020 - General Microbiology » Spring 2022 » Review Quiz 6

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
What characteristic of the DNA differs from one type of organism to another?
A.   alternating sugar & phosphate along a strand
B.   H-bonded anti parallel strands
C.   nucleotide sequence
D.   double helix shape
Question #2
A gene is best defined as a ________________.
A.   anti codons of tRNA
B.   sequence of DNA nucleotides in a section of DNA coding for a product
C.   set of 3 nucleotides coding for an amino acid
D.   base sequence in mRNA
Question #3
All are nitrogenous bases contained in different DNA nucleotides except _____________.
A.   Uracil
B.   Thymine
C.   Cytosine
D.   Guanine
E.   Adenine
Question #4
The main reason why cells & viruses replicate their genetic material is to _____________________________.
A.   provide a back up copy
B.   protect themselves from harsh conditions
C.   prepare for reproduction
D.   regulate gene expression
Question #5
During ___________________, information from an mRNA is used to synthesize a specific protein.
A.   translation
B.   DNA replication
C.   transcription
D.   lac operon
Question #6
Proofreading & repair mechanisms occur during both DNA replication & RNA replication.
A.   True
B.   False
Question #7
To turn the lac operon on in E. coli, allolactose binds to the repressor & "pulls" it away from the ___________________ .
A.   regulatory gene
B.   promoter
C.   structural genes
D.   operator
Question #8
Genes in DNA fragments are amplified (billions of copies created) relatively rapidly using _______________________. This method is presently being used to detect presence of SARS-CoV-2 in patients and potential carriers.
A.   PCR
B.   DNA sequencing
C.   DNA profiling
D.   Gene editing
Question #9
All of the techniques below help identify the source of infection, trace it and prevent a major outbreak of an epidemic except _______________.
A.   PCR
B.   DNA sequencing
C.   DNA profiling
D.   genetic engineering
Question #10
___________________ occurs when “naked” fragments of DNA from the culture medium are absorbed by competent bacterial cells.
A.   Transposition
B.   Transformation
C.   Conjugation
D.   Transduction

Need help with your exam preparation?

Existing Quiz Clients Login here