問題一覧
1
Causes of nullisomy is:
nondisjunction of chromosome during meiosis
2
Which mutation is shown in given figure?
translocation
3
Which of them is correct for noncoding RNA?
it transcribed from DNA but not translated into proteins
4
What is the operator?
segment of DNA to which a repressor binds
5
Which of them is promoter?
1
6
Which of them is not “day-to-day survival” characteristic of living organisms?
Reproduction
7
Where does processing of mRNA occur?
In nucleus
8
What is the structure of viruses?
Non-cellular:surrounded by a protein coat and contain genetic material
9
Which noncoding RNA is expressed on the inactive X chromosome?
Xist RNA
10
Cri du chat is example of:
Chromosome mutation
11
What is the characteristic of living organism that survival over time?
Reproduction
12
Which of them is Okazaki fragment?
3
13
Translocation is example of:
Chromosome mutation
14
During DNA replication many enzymes work together to help produce two DNA strands from the original strand of DNA. If helicase were to stop working what would be the result?
The original DNA strand would never have been unzipped and therefore DNA replication would not be able to take place
15
Monosomy is example of:
Genome mutation
16
What does genetic drift mean?
Change in the proportions of alleles
17
What is the function of DNA lygase?
Joins the Okazaki fragments
18
What genetic material does the SARS-Co2 virus contain?
Single stranded RNA
19
What is the characteristic of living organism that changes over time?
Evolution
20
How many parts are there in a nucleotide?
3
21
Determine number of chromosomes that can cause Robertsonian translocation:
13, 14, 15, 21, 22
22
Which of them is property of mRNA?
Binds to amino acids
23
Which of them is silent mutation?
2
24
What does migration mean?
Movement of individuals from one population into another
25
What is the reason of formation of ring chromosome?
Deletion of both ends of chromosome
26
Which of them are substitution of nucleotides? 1 – deletion 2 - transversion 3 – duplication 4 – translocation 5 – transition 6 – insertion
2, 5
27
Cytoplasmic mutation occurs in:
Mitochondria
28
Which of them is coding RNA?
mRNA
29
Which of them is leading strand of DNA?
1
30
Which enzyme does remove the RNA primer from lagging strand of DNA?
DNA polymerase I
31
Which of them are teratogenic agents?
Radiation
32
Which of them is operator?
2
33
During the examination of the newborn child, Down's syndrome was established. What is the possible cause of this pathology?
Trisomy on the 21st chromosome
34
3’ end of DNA contains:
Hydroxyl group
35
Where do embryonic stem cells derived from?
blastocyst
36
Substitutions of nitrogen bases is example of:
Gene mutation
37
Which of them is repressor?
5
38
Which of them is property of DNA?
Bases are A, T, G, C
39
What is the name of enzyme that will bind to RNA primer for synthesis of DNA strand?
DNA polymerase III
40
Which of the followings are parts of primary transcript RNA?
Exon and intron
41
What is the function of DNA polymerase I?
Removes the RNA primer
42
Which method of regeneration is shown in given picture?
Compensatory hypertrophy
43
Cytoplasmic mutation occurs in:
Plastids
44
How many nucleotides are there in RNA primer?
5-10
45
Type of genome mutation:
Polyploidy
46
Determine number of acrocentric chromosomes:
13, 14, 15, 21, 22 and Y
47
What is the intron?
A site or the sites of a gene which are located between exons and not participating in coding of the final product (RNA or protein).
48
What are the number of chromosome and karyotype of zygote?
69XXY
49
Determine the correct pairs of nucleotide bases in the structure of RNA:
A-U
50
Which process is shown in figure?
Operon is turned off
51
What nitrogenous base is not found in DNA?
Uracil
52
Which of them is non-cellular form of life?
Viruses
53
Which enzyme does remove the RNA primer from leading strand of DNA?
DNA polymerase I
54
Stages of a nuclear genes expression:
Transcription – post-transcription processing – translation
55
Translocation is example of:
Chromosome mutation
56
During DNA replication many enzymes work together to help produce two DNA strands from the original strand of DNA. If single strand binding protein were to stop working what would be the result?
The unwound parental DNA would never have been stabilized
57
Which enzyme adds nucleotide to RNA primer during replication of DNA?
DNA polymerase III
58
The frequency of two alleles in a gene pool is 0.2 (A) and 0.4(a). Assume that the population is in Hardy-Weinberg equilibrium. Calculate the percentage of heterozygous individuals in the population.
0.8
59
5’ end of DNA contains:
Phosphate group
60
Each viral particle consists of: 1) Either DNA or RNA 2) Just DNA 3) Just RNA 4) Capsid
1, 4
61
What does mutation mean?
Inheritable change of genetic material
62
There are several types of:
tRNA
63
Which of them is not nucleic acid?
Adenine
64
Stages of genes expression in prokaryotes:
Transcription – translation
65
Premature termination of the synthesis of the desired protein occurs in result of:
Nonsense mutation
66
During DNA replication many enzymes work together to help produce two DNA strands from the original strand of DNA. If DNA polymerase were to stop working what would be the result?
No new nitrogenous bases would be added to the DNA strands
67
During DNA replication many enzymes work together to help produce two DNA strands from the original strand of DNA. If DNA ligase were to stop working what would be the result?
The Okazaki fragments of the lagging strand would stay fragments because they would not be joined together
68
Trisomy is example of:
Genome mutation
69
Which of them is nonsense mutation?
3
70
What is the promoter?
region of DNA where transcription of a gene is initiated
71
Which of them is lagging strand of DNA?
4
72
The frequency of two alleles in a gene pool is 0.2 (A) and 0.4 (a). Assume that the population is in Hardy-Weinberg equilibrium. Calculate the percentage of homozygous recessives in the population.
0.16
73
Which of them is RNA primer?
2
74
Mutation is a spontaneous change that affect:
DNA
75
What are the number of chromosome and karyotype of zygote?
69XYY
76
Which of them is property of tRNA?
Directs the formation of the amino acids
77
What is the name of syndrome which has next symptoms:short stature, broad chest, low hairline, low-set ears, webbed neck, experience gonadal dysfunction, amenorrhea?
Turner syndrome
78
Which of them is property of rRNA?
Major components of ribosome
79
Which method of regeneration is shown in given picture?
Epimorphosis
80
What nitrogenous base is not found in RNA?
Thymine
81
Where can tissue stem cells be found?
All of them
82
What type of RNA is not found in cell?
Separative
83
Which of them is correct?
Population is a group of interbreeding individuals of the same species inhabiting the same space at the same time
84
Why are chimpanzees so much hairier than humans?
The gene for formation of keratin is expressed in chimpanzees but silenced by a stop codon in humans
85
Properties of stem cells:
All of them
86
Which type of mutation is shown on diagrammatical representation of the human karyotype?
Genome mutation
87
Which virus is shown in figure?
Human Immunodeficiency virus
88
Type of gene mutation:
Transversion
89
The process of mRNA formation is called:
Transcription
90
What is study teratology?
Birth defects
91
What are the properties of viruses? 1 -Viruses must use a host cell to reproduce 2 - Viruses are cellular 3 -Viruses do not have their own energy metabolism 4-Viruses are surrounded by a protein coat 5-Viruses are extraordinarily large 6- Viruses have nucleus
1, 3, 4
92
What is the name of enzyme marked with question mark?
DNA gyrase
93
Which process is shown in picture?
Splicing
94
Type of chromosome mutation:
Deletion
95
Which of them are examples of physiological regeneration?
2, 3
96
Which of them is bacteriophage?
3
97
Which of them is adenovirus?
4
98
Which of them is property of RNA?
Is translated to give proteins
99
Which of the following breaks the hydrogen bonds holding together two strands of DNA?
helicase
100
What is the correct order of living organism?
atom-molecule-cell-tissue-organ-organ system