問題一覧
1
What is the characteristic of living organism that survival over time?
Reproduction
2
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
3
What genetic material does the SARS-Co2 virus contain?
Single stranded RNA
4
What does genetic drift mean?
Change in the proportions of alleles
5
What is the characteristic of living organism that changes over time?
Evolution
6
Where do embryonic stem cells derived from?
blastocyst
7
Which of them are teratogenic agents?
Radiation
8
What type of RNA is not found in cell?
Separative
9
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
10
Monosomy is example of:
Genome mutation
11
Which of them is not “day-to-day survival” characteristic of living organisms?
Reproduction
12
What is the function of DNA polymerase I?
Removes the RNA primer
13
Mutation is a spontaneous change that affect:
DNA
14
Substitutions of nitrogen bases is example of:
Gene mutation
15
Which method of regeneration is shown in given picture?
Compensatory hypertrophy
16
Which of them is property of DNA?
Bases are A, T, G, C
17
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
18
What is the operator?
segment of DNA to which a repressor binds
19
What is the promoter?
region of DNA where transcription of a gene is initiated
20
What is the name of enzyme that will bind to RNA primer for synthesis of DNA strand?
DNA polymerase III
21
Which of them is bacteriophage?
3
22
Which of them is promoter?
1
23
Which mutation is shown in given figure?
translocation
24
Translocation is example of:
Chromosome mutation
25
Each viral particle consists of: 1) Either DNA or RNA 2) Just DNA 3) Just RNA 4) Capsid
1, 4
26
Stages of genes expression in prokaryotes:
Transcription – translation
27
What nitrogenous base is not found in DNA?
Uracil
28
What is the reason of formation of ring chromosome?
Deletion of both ends of chromosome
29
Which of them is repressor?
5
30
The process of mRNA formation is called:
Transcription
31
How many parts are there in a nucleotide?
3
32
Which of them is not nucleic acid?
Adenine
33
Which of them is adenovirus?
4
34
Which enzyme does remove the RNA primer from leading strand of DNA?
DNA polymerase I
35
Premature termination of the synthesis of the desired protein occurs in result of:
Nonsense mutation
36
Where does processing of mRNA occur?
In nucleus
37
There are several types of:
tRNA
38
Cri du chat is example of:
Chromosome mutation
39
3’ end of DNA contains:
Hydroxyl group
40
What does migration mean?
Movement of individuals from one population into another
41
Which method of regeneration is shown in given picture?
Epimorphosis
42
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
43
Trisomy is example of:
Genome mutation
44
Cytoplasmic mutation occurs in:
Plastids
45
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
46
What is the correct order of living organism?
atom-molecule-cell-tissue-organ-organ system
47
Which virus is shown in figure?
Human Immunodeficiency virus
48
Which of them is RNA primer?
2
49
What is the name of enzyme marked with question mark?
DNA gyrase
50
Which of them is property of mRNA?
Binds to amino acids
51
Which of them is nonsense mutation?
3
52
Which enzyme adds nucleotide to RNA primer during replication of DNA?
DNA polymerase III
53
What nitrogenous base is not found in RNA?
Thymine
54
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
55
Type of gene mutation:
Transversion
56
Which type of mutation is shown on diagrammatical representation of the human karyotype?
Genome mutation
57
Which of them is Okazaki fragment?
3
58
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
59
Type of genome mutation:
Polyploidy
60
Causes of nullisomy is:
nondisjunction of chromosome during meiosis
61
What are the number of chromosome and karyotype of zygote?
69XYY
62
What are the number of chromosome and karyotype of zygote?
69XXY
63
Which of them is leading strand of DNA?
1
64
5’ end of DNA contains:
Phosphate group
65
Which of them is lagging strand of DNA?
4
66
How many nucleotides are there in RNA primer?
5-10
67
Which of them are substitution of nucleotides? 1 – deletion 2 - transversion 3 – duplication 4 – translocation 5 – transition 6 – insertion
2, 5
68
Which process is shown in figure?
Operon is turned off
69
Which of them is silent mutation?
2
70
Which of them is correct?
Population is a group of interbreeding individuals of the same species inhabiting the same space at the same time
71
Which of them is correct for noncoding RNA?
it transcribed from DNA but not translated into proteins
72
Which of them is coding RNA?
mRNA
73
Cytoplasmic mutation occurs in:
Mitochondria
74
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
75
Which of them are examples of physiological regeneration?
2, 3
76
Which noncoding RNA is expressed on the inactive X chromosome?
Xist RNA
77
Which process is shown in picture?
Splicing
78
Determine the correct pairs of nucleotide bases in the structure of RNA:
A-U
79
Which of the followings are parts of primary transcript RNA?
Exon and intron
80
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
81
Translocation is example of:
Chromosome mutation
82
What is the structure of viruses?
Non-cellular:surrounded by a protein coat and contain genetic material
83
What is the function of DNA lygase?
Joins the Okazaki fragments
84
Type of chromosome mutation:
Deletion
85
Which enzyme does remove the RNA primer from lagging strand of DNA?
DNA polymerase I
86
Which of them is property of tRNA?
Directs the formation of the amino acids
87
Which of them is operator?
2
88
Which of them is non-cellular form of life?
Viruses
89
Stages of a nuclear genes expression:
Transcription – post-transcription processing – translation
90
Where can tissue stem cells be found?
All of them
91
Which of them is property of rRNA?
Major components of ribosome
92
What does mutation mean?
Inheritable change of genetic material
93
Determine number of acrocentric chromosomes:
13, 14, 15, 21, 22 and Y
94
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
95
What is study teratology?
Birth defects
96
Properties of stem cells:
All of them
97
Which of them is property of RNA?
Is translated to give proteins
98
Determine number of chromosomes that can cause Robertsonian translocation:
13, 14, 15, 21, 22
99
Which of the following breaks the hydrogen bonds holding together two strands of DNA?
helicase
100
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).