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Q 1/118
Score 0
Which of the following is true about codons?
30
A codon can code for multiple amino acids.
A codon always codes for a unique amino acid.
Multiple codons can code for the same amino acid.
Different codons code for different amino acids.
Q 2/118
Score 0
What is the primary structure of a protein?
30
A sequence of amino acids
A folded structure
A complex of several proteins
A three-dimensional shape
118 questions
Q.
Which of the following is true about codons?
1
30 sec
Q.
What is the primary structure of a protein?
2
30 sec
Q.
What is the tertiary structure of a protein?
3
30 sec
Q.
What is the secondary structure of a protein?
4
30 sec
Q.
What is the quaternary structure of a protein?
5
30 sec
Q.
What is the primary function of proteins in cells?
6
30 sec
Q.
Which level of protein structure is identified as a sequence of amino acids?
7
30 sec
Q.
Which type of protein structure is characterized by the spatial arrangement (3 Dimension) of secondary structures?
8
30 sec
Q.
What is the secondary structure element that forms a right-handed coil?
9
30 sec
Q.
What type of bond forms between amino acids in a protein?
10
30 sec
Q.
What is the primary function of a protein peptide bond?
11
30 sec
Q.
Which atom is responsible for forming a peptide bond in proteins?
12
30 sec
Q.
What is the significance of a protein peptide bond?
13
30 sec
Q.
There are different possible folding shapes for all of the protein structures except:
14
30 sec
Q.
How many possible shapes exist for a primary structure?
15
30 sec
Q.
How many possible shapes exist for a Secondary protein structure?
16
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Q.
Which secondary structure of a protein is characterized by a right-handed spiral?
17
30 sec
Q.
Which secondary structure of a protein is characterized by a repeated pattern of hydrogen bonds between the amide groups?
18
30 sec
Q.
Which secondary structure of a protein is characterized by a repeated pattern of hydrogen bonds between the carbonyl oxygen and the amine hydrogen?
19
30 sec
Q.
Which secondary structure of a protein is characterized by a tight helical structure?
20
30 sec
Q.
What is an inducible operon?
21
30 sec
Q.
What is the role of the operator in an inducible operon?
22
30 sec
Q.
Which molecule acts as an inducer in an inducible operon?
23
30 sec
Q.
What is the function of a repressor protein in an inducible operon?
24
30 sec
Q.
Which of the following is an example of an inducible operon in bacteria?
25
30 sec
Q.
What is the role of the inducer in an inducible operon?
26
30 sec
Q.
Which of the following is NOT a characteristic of an inducible operon?
27
30 sec
Q.
In an inducible operon, what happens when the repressor protein is bound to the operator region?
28
30 sec
Q.
What is the function of an inducer molecule in an inducible operon?
29
30 sec
Q.
What is an inducible operon?
30
30 sec
Q.
In an inducible operon, what happens when the inducer molecule is present?
31
30 sec
Q.
What is the function of the lac operon in bacteria?
32
30 sec
Q.
Which of the following statements is true about the lac operon?
33
30 sec
Q.
Which molecule acts as the inducer in the lac operon?
34
30 sec
Q.
What is the primary role of an operator region in an inducible operon?
35
30 sec
Q.
What is the function of the lacZ gene in the inducible lac operon?
36
30 sec
Q.
What is the function of the lacY gene in the inducible lac operon?
37
30 sec
Q.
What is the role of the lacI gene in the inducible lac operon?
38
30 sec
Q.
Which of the following is true about an inducible operon?
39
30 sec
Q.
Since we know that an inducer binds to a repressor which in turn allows transcription to occur, in the lac operon which is responsible for the intake and breakdown of lactose, what is the inducer that signals the repressor of the lac operon to stop inhibiting transcription?
40
30 sec
Q.
What role does the catabolite activator protein (CAP) play in the lac operon?
41
30 sec
Q.
What happens to transcription of the lac operon when the catabolite activator protein (CAP) is bound to cAMP?
42
30 sec
Q.
Which molecule binds to the catabolite activator protein (CAP) to energize it and activate transcription in the lac operon?
43
30 sec
Q.
What is the function of the lac operon in bacteria?
44
30 sec
Q.
In the absence of glucose, what happens to catabolite activator protein (CAP)?
45
30 sec
Q.
Which molecule inhibits the binding of catabolite activator protein (CAP) to the CAP binding site in the lac operon?
46
30 sec
Q.
How does lactose enter the bacterial cell?
47
30 sec
Q.
How many genes are typically found in the lac operon?
48
30 sec
Q.
How many genes are typically found in the trp operon?
49
30 sec
Q.
Which operon is involved in the regulation of tryptophan metabolism?
50
30 sec
Q.
The trp operon is involved in the synthesis of which molecule?
51
30 sec
Q.
What is tryptophan?
52
30 sec
Q.
Which of the following is NOT a natural source of tryptophan?
53
30 sec
Q.
In a repressible operon, which of the following is true?
54
30 sec
Q.
Which of the following is an example of a repressible operon?
55
30 sec
Q.
In a repressible operon, which of the following is true about the repressor protein?
56
30 sec
Q.
In a repressible operon, what is the role of the operator region?
57
30 sec
Q.
Which of the following is a characteristic of a repressible operon?
58
30 sec
Q.
Which of the following is an example of a repressible operon commonly found in bacteria?
59
30 sec
Q.
Which of the following is a key characteristic of a repressible operon?
60
30 sec
Q.
Which operon is responsible for the regulation of lactose metabolism (intake and breakdown) in bacterial cell?
61
30 sec
Q.
Which operon is responsible for the regulation of tryptophan metabolism in bacteria?
62
30 sec
Q.
Which operon is responsible for the synthesis of an essential amino acid in bacteria?
63
30 sec
Q.
What is a mutation?
64
30 sec
Q.
Which of the following is an example of a point mutation?
65
30 sec
Q.
Which of the following is NOT a type of mutation?
66
30 sec
Q.
Which of the following is a heritable mutation?
67
30 sec
Q.
What is a frameshift mutation?
68
30 sec
Q.
Which of the following is a cause of mutation in DNA?
69
30 sec
Q.
Which of the following is a chemical that can cause mutations?
70
30 sec
Q.
Which of the following genetic mutations is caused by the insertion or deletion of a nucleotide?
71
30 sec
Q.
Which of the following causes a spontaneous mutation in DNA?
72
30 sec
Q.
What type of mutation is caused by a single nucleotide change?
73
30 sec
Q.
Which of the following is a cause of chromosomal mutations?
74
30 sec
Q.
Which of the following is a type of mutation caused by the rearrangement of genetic material?
75
30 sec
Q.
Which of the following causes chromosomal mutations?
76
30 sec
Q.
Which of the following refers to a change in the genetic material that can be passed on from one generation to another?
77
30 sec
Q.
What is a heritable mutation?
78
30 sec
Q.
Which of the following is an example of a heritable mutation?
79
30 sec
Q.
What is the term for a mutation that occurs in the DNA of reproductive cells and can be passed on to offspring?
80
30 sec
Q.
What is the term for a genetic change that occurs randomly and is not influenced by environmental factors?
81
30 sec
Q.
Which of the following is NOT a type of heritable mutation?
82
30 sec
Q.
How does UV radiation cause mutations?
83
30 sec
Q.
What type of UV radiation is responsible for most DNA damage?
84
30 sec
Q.
Which type of DNA damage is commonly caused by UV radiation?
85
30 sec
Q.
How does UV radiation cause mutations in the DNA?
86
30 sec
Q.
What is the main mechanism by which UV radiation causes mutations in DNA?
87
30 sec
Q.
Which term describes a type of DNA mutation where an incorrect nucleotide is inserted, resulting in the production of a stop codon (stopping replication early/pematurely)?
88
30 sec
Q.
What is the term for a DNA mutation that involves the insertion or deletion of nucleotides in multiples of three, thus not affecting the reading frame?
89
30 sec
Q.
Which term describes a type of DNA mutation where no change ends up happening in the amino acid sequence of the resulting protein observed?
90
30 sec
Q.
What is one advantage of point mutation in evolutionary adaptation?
91
30 sec
Q.
What is one of the benefits of point mutation in research?
92
30 sec
Q.
What is a misense mutation?
93
30 sec
Q.
What is an example of a benefit of point mutation in research?
94
30 sec
Q.
What is a single nucleotide polymorphism (SNP)?
95
30 sec
Q.
How are single nucleotide polymorphisms (SNPs) different from insertions or deletions (indels)?
96
30 sec
Q.
How can single nucleotide polymorphisms (SNPs) impact gene function?
97
30 sec
Q.
Which of the following is true about single nucleotide polymorphisms (SNPs)?
98
30 sec
Q.
How is a single nucleotide polymorphism (SNP) different from a mutation?
99
30 sec
Q.
How are single nucleotide polymorphisms (SNPs) typically inherited?
100
30 sec
Q.
Which of the following is not a potential application of single nucleotide polymorphisms (SNPs) in genetic research?
101
30 sec
Q.
Which of the following is the most common mechanism of antibiotic resistance in bacteria?
102
30 sec
Q.
What type of virus is T2 phage?
103
30 sec
Q.
What is the host range of T2 phage?
104
30 sec
Q.
Are all E. coli susceptible infection by the T2 phage?
105
30 sec
Q.
What is the primary reason why viruses mutate at a high rate?
106
30 sec
Q.
Which of the following is NOT a mechanism of virus mutation?
107
30 sec
Q.
What is the term used to describe a virus that has undergone significant genetic changes, resulting in a new subtype?
108
30 sec
Q.
Which of the following is true about viral mutations?
109
30 sec
Q.
Which amino acid substitution occurs as a result of the mutation causing sickle cell anemia?
110
30 sec
Q.
What is the primary effect of the sickle cell anemia mutation on red blood cells?
111
30 sec
Q.
Which of the following is not a symptom of sickle cell anemia?
112
30 sec
Q.
What is cystic fibrosis?
113
30 sec
Q.
Which of the following is a characteristic of cystic fibrosis?
114
30 sec
Q.
Which organ is primarily affected by cystic fibrosis?
115
30 sec
Q.
Which mutation is most commonly associated with cystic fibrosis?
116
30 sec
Q.
Which gene is responsible for the production of the CFTR protein?
117
30 sec
Q.
Which of the following is NOT a common symptom of cystic fibrosis?
