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MCB 2010C Microbiology Exam 3 NEW 2024|2025
100% REAL EXAM.QUESTION AND ANSWER
which of the following enzymes is needed for transcription? - (ANSWER)RNA
polymerase
what occurs at the start codon? - (ANSWER)translation begins
when the repressor is present on the operator site: - (ANSWER)transcription
cannot occur
in the inducible lac-operon, when lactose is not present the operon is: -
(ANSWER)off, with no transcription occurring
a region of DNA that is used to code for a protein is called a(n): - (ANSWER)gene
nonsense codons - (ANSWER)indicates where translation ends
R plasmids contain: - (ANSWER)genes for antibiotic resistance
which of the following is not involved with transcription? - (ANSWER)DNA
polymerase
what is the final product of translation? - (ANSWER)proteins
, 2
which statements about introns is true? - (ANSWER)they are only found in
eukaryotes
Gram-positive bacteria are split into two main groups based on which
characteristic? - (ANSWER)Guanine and cytosine concentration
You have done a Gram stain of a sample of bacteria from the large intestines.
Which of the following is the most likely Gram status and morphology of the
sample? - (ANSWER)gram-negative bacilli
Which of the following is not a characteristic in the domain Archaea? -
(ANSWER)Chromosomes in pairs
Chlamydias have all of the following characteristics except: - (ANSWER)Eukaryotic
Which microorganism commonly produces endospores? - (ANSWER)Clostridium
Which feature would not fit with a microorganism in the domain Bacteria? -
(ANSWER)Found at temperatures in excess of 90°C
Which feature is unique to the domain Archaea? - (ANSWER)Methanogenesis
MCB 2010C Microbiology Exam 3 NEW 2024|2025
100% REAL EXAM.QUESTION AND ANSWER
which of the following enzymes is needed for transcription? - (ANSWER)RNA
polymerase
what occurs at the start codon? - (ANSWER)translation begins
when the repressor is present on the operator site: - (ANSWER)transcription
cannot occur
in the inducible lac-operon, when lactose is not present the operon is: -
(ANSWER)off, with no transcription occurring
a region of DNA that is used to code for a protein is called a(n): - (ANSWER)gene
nonsense codons - (ANSWER)indicates where translation ends
R plasmids contain: - (ANSWER)genes for antibiotic resistance
which of the following is not involved with transcription? - (ANSWER)DNA
polymerase
what is the final product of translation? - (ANSWER)proteins
, 2
which statements about introns is true? - (ANSWER)they are only found in
eukaryotes
Gram-positive bacteria are split into two main groups based on which
characteristic? - (ANSWER)Guanine and cytosine concentration
You have done a Gram stain of a sample of bacteria from the large intestines.
Which of the following is the most likely Gram status and morphology of the
sample? - (ANSWER)gram-negative bacilli
Which of the following is not a characteristic in the domain Archaea? -
(ANSWER)Chromosomes in pairs
Chlamydias have all of the following characteristics except: - (ANSWER)Eukaryotic
Which microorganism commonly produces endospores? - (ANSWER)Clostridium
Which feature would not fit with a microorganism in the domain Bacteria? -
(ANSWER)Found at temperatures in excess of 90°C
Which feature is unique to the domain Archaea? - (ANSWER)Methanogenesis
