What characteristic of the genetic code explains this fact?
Question 51 options:
The genetic code is universal.
The genetic code is continuous.
The genetic code is redundant.
The genetic code has 20 different amino acids.
Question 52 (1 point)
Which bases are found in RNA?
Question 52 options:
adenine, uracil, thymine, and cytosine
adenine, uracil, thymine, and guanine
adenine, thymine, cytosine, and guanine
adenine, uracil, cytosine, and guanine
Question 53 (1 point)
In transcription, what type of strand is transcribed?
Question 53 options:
DNA sense strand
DNA anti-sense strand
RNA sense strand
RNA anti-sense strand
Question 54 (1 point)
How would transcription be affected if the promoter region on DNA was mutated?
Question 54 options:
RNA polymerase would not be able to bind to DNA, and transcription would not be initiated.
RNA polymerase would bind to an enhancer region, and transcription would continue.
RNA polymerase would be able to continue initiation and elongation.
RNA polymerase would be able to bind to DNA, but elongation would not occur.
Question 55 (1 point)
What are the components of ribosomes?
Question 55 options:
two sub-units composed of proteins and rRNAs
one sub-unit composed of proteins and rRNAs
two sub-units composed of proteins and tRNAs
one sub-unit composed of proteins and tRNAs
Question 56 (1 point)
What is the corresponding anticodon for the codon CGG?
Question 56 options:
Question 57 (1 point)
Aminoglycosides are a class of antibiotics that specifically bind to bacterial ribosomes to cause inhibition of tRNA from the A site to the P site. Using this information, how are bacteria affected by aminoglycoside usage?
Question 57 options:
Aminoglycosides prevent bacteria from synthesizing proteins by inhibiting post-translational modi cation.
Aminoglycosides prevent bacteria from synthesizing mRNA by inhibiting transcription.
Aminoglycosides prevent bacteria from synthesizing proteins by inhibiting post-transcriptional modi cation of mRNA.
Aminoglycosides prevent bacteria from synthesizing proteins by inhibiting translation.
Question 58 (1 point)
A mutation causes a sequence of mRNA codons to change from GUU CAU UUG to GUU CAU UAG. What type of mutation has occurred?
Question 58 options:
Question 59 (1 point)
Which statement about regulation of gene expression in prokaryotes is true?
Question 59 options:
The most common form of regulation of gene expression is at the level of translation.
The most common form of regulation of gene expression is at the post-transcriptional level.
Regulation of gene expression occurs through operons.
Regulation of gene expression occurs through alternative splicing.
Question 60 (1 point)
What is the name of the group of proteins that are required for the initiation of transcription in eukaryotes?
Question 60 options:
Question 61 (1 point)
Segments of DNA from two different species can be joined in the lab to form a single molecule of DNA. What is the new molecule called?
Question 61 options:
Question 62 (1 point)
Bacterial cells that take up DNA under certain experimental conditions are said to be
Question 62 options:
Question 63 (1 point)
What are two di erent methods of DNA
Question 63 options:
gene cloning in bacteria and PCR
gene cloning in bacteria and dideoxy sequencing
PCR and dideoxy sequencing
PCR and biotechnology
Question 64 (1 point)
How many copies of DNA will be produced from one copy a er 20 cycles of a PCR reaction?
Question 64 options:
1 048 576
Question 65 (1 point)
What process enables fragments of DNA to be separated for analysis using size and charge differences?
Question 65 options:
polymerase chain reaction (PCR)
Question 66 (1 point)
What are the components of a small reaction tube prepared for dideoxy sequencing?
Question 66 options:
Single-stranded DNA, DNA polymerase, primer, deoxynucleotides, one dideoxynucleotide
Single-stranded DNA, DNA polymerase, primer, one dideoxynucleotide
Double-stranded DNA, DNA polymerase, primer, one dideoxynucleotide
Double-stranded DNA, DNA polymerase, primer, deoxynucleotides, one dideoxynucleotide
Question 68 (1 point)
Your research group wishes to study which regions of DNA are crucial for the proper transcription of a gene. To achieve this, you specifically mutate nucleotides in the promoter regions of the gene. What method do you use to produce these mutations?
Question 68 options:
restriction endonuclease reaction
high through-put sequencing
Question 69 (1 point)
What were the main goals of the Human Genome Project?
Question 69 options:
Sequence the human genome and identify the genes in it.
Sequence the human genome and determine all the genes which cause disease.
Identify the genes in the genome and determine which genes cause disease.
Sequence the human genome and clone mammalian cells.
Question 70 (1 point)
Gene pharming is
Question 70 options:
a method of cloning mammals from somatic cells.
a method of cloning mammals from somatic cells.
the process of using transgenic bacteria to produce therapeutic proteins.
the process of using transgenic animals to produce therapeutic proteins.
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