BIOD 151 MODULE 4 TEST BANK COMPLETE
QUESTIONS AND ANSWERS GUARANTEED
TO PASS PRACTICE SOLUTION
●● Definition of Mutagen
Answer: An agent that induces changes in DNA (mutations); includes
physical agents that damage DNA and chemicals that alter DNA bases.
●● What does Telomerase do?
Answer: An enzyme that adds a single stranded DNA to the 3' end of
DNA in the telomere region. Uses internal RNA template to code for a
repeated DNA end so DNA does not shorten with each synthesis.
●● Translation is the process of making an mRNA from a DNA strand. T
or F?
Answer: False, Translation is the process where mRNA meets with a
ribosome and tRNA to create proteins. Transcription is the process of
making mRNA from DNA.
●● The start codon (AUG) also codes for methionine, how does this
affect the protein?
Answer: All proteins begin with methionine.
,●● Translation occurs when:
Answer: Peptide bonds are formed.
●● The central dogma of molecular biology states that information flows
from:
Answer: DNA to RNA to Protein
●● Which of the following is not a type of RNA? mRNA, snRNA,
tRNA, rRNA, all are RNA
Answer: snRNA
●● Definition of Transcription
Answer: Transcription is the first step of gene expression, in which a
particular segment of DNA is copied into RNA (mRNA) by the enzyme
RNA Polymerase
●● Promoters and terminators are found where?
Answer: On the DNA sequence.
●● The main enzyme that produces a transcript in transcription is
Answer: RNA polymerase
●● Compared to holoenzyme, the core enzyme lacks what?
, Answer: Sigma Factor
●● The core enzyme can not synthesize RNA. T/F
Answer: True
●● Different from DNA synthesis, RNA is synthesized from 3' to 5'.
Answer: False, RNA is Synthesized from 5' to 3' on the template strand
of DNA's 3' to 5'
●● The coding strand of a DNA during transcription is called because
Answer: It contains the same coding information as the mRNA.
●● In eukaryotic system, a primary transcript is modified or processed
to yield a mature transcript, meaning
Answer: A 5' Cap is added, a 3' Poly-A tail is added, and INtrons
(INtervening non-coding sequences) are spliced out.
●● In alternative splicing what happens?
Answer: Different exons can be joined together to create different
proteins.
●● Translation is the process of making a mRNA from a DNA template
strand.
QUESTIONS AND ANSWERS GUARANTEED
TO PASS PRACTICE SOLUTION
●● Definition of Mutagen
Answer: An agent that induces changes in DNA (mutations); includes
physical agents that damage DNA and chemicals that alter DNA bases.
●● What does Telomerase do?
Answer: An enzyme that adds a single stranded DNA to the 3' end of
DNA in the telomere region. Uses internal RNA template to code for a
repeated DNA end so DNA does not shorten with each synthesis.
●● Translation is the process of making an mRNA from a DNA strand. T
or F?
Answer: False, Translation is the process where mRNA meets with a
ribosome and tRNA to create proteins. Transcription is the process of
making mRNA from DNA.
●● The start codon (AUG) also codes for methionine, how does this
affect the protein?
Answer: All proteins begin with methionine.
,●● Translation occurs when:
Answer: Peptide bonds are formed.
●● The central dogma of molecular biology states that information flows
from:
Answer: DNA to RNA to Protein
●● Which of the following is not a type of RNA? mRNA, snRNA,
tRNA, rRNA, all are RNA
Answer: snRNA
●● Definition of Transcription
Answer: Transcription is the first step of gene expression, in which a
particular segment of DNA is copied into RNA (mRNA) by the enzyme
RNA Polymerase
●● Promoters and terminators are found where?
Answer: On the DNA sequence.
●● The main enzyme that produces a transcript in transcription is
Answer: RNA polymerase
●● Compared to holoenzyme, the core enzyme lacks what?
, Answer: Sigma Factor
●● The core enzyme can not synthesize RNA. T/F
Answer: True
●● Different from DNA synthesis, RNA is synthesized from 3' to 5'.
Answer: False, RNA is Synthesized from 5' to 3' on the template strand
of DNA's 3' to 5'
●● The coding strand of a DNA during transcription is called because
Answer: It contains the same coding information as the mRNA.
●● In eukaryotic system, a primary transcript is modified or processed
to yield a mature transcript, meaning
Answer: A 5' Cap is added, a 3' Poly-A tail is added, and INtrons
(INtervening non-coding sequences) are spliced out.
●● In alternative splicing what happens?
Answer: Different exons can be joined together to create different
proteins.
●● Translation is the process of making a mRNA from a DNA template
strand.
