/100 3 Oral Biology Preparation (Dr. Try Ky) 1 / 100 1) There are two major factors influence repair and regeneration? a. Metabolic and would characteristic like size and location b. Hormonal and mobility c. Systemic and local factors d. Nutrition and infection 2 / 100 2) Growth factor responsible for repair and regeneration: FGF, fibroblast growth factor.? a. Growth and new generation of endovascular epithelial cells b. Growth and new generation of keratinocyte c. Promotion of epithelial cell growth, angiogenesis, and promotion of wound healing d. Cell growth, new generation and repair of blood vessel, and collagen product e. Tissue repair, cell growth, and collagen products. 3 / 100 3) Growth factors and their receptors can be grouped into ‘families,’ based upon shared features of ? a. Anatomy of protein b. Structural of protein folding c. Amino acid sequence d. Protein sequence 4 / 100 4) What is the outcome of repair? a. To restore functions and tissue continuity, but with distortion or normal architecture. b. To restore functions and tissue continuity c. To restore functions d. To restore tissue continuity 5 / 100 5) Non-marrow origin mesenchymal stem cells EXCLUDE ? a. Placenta, and umbilical cord blood b. Dental pulp c. Embryo d. Adipose, and muscle 6 / 100 6) The process of making messenger RNA (mRNA) from a DNA template by RNA polymerase? a. Transcription factor b. Gene expression c. Transcriptional regulation d. Transcription e. Response element 7 / 100 7) In order to identify multi-potency stem cells, ones has to undergo cellar differentiation EXCLUDE? a. Bone b. Cartilage c. Fat d. Skin e. Neuron 8 / 100 8) Retroviruses used to deliver the four transcription factors in the earliest studies is safe to generating iPSCs.? a. False b. True 9 / 100 9) A growth factor is a naturally occurring substance capable of stimulating cellular growth, proliferation, healing, and cellular differentiation.? a. True b. False 10 / 100 10) Growth factors and their receptors can be grouped into ‘families,’ based upon shared features of size and location, and into ‘superfamilies,’ based upon shared their functions.? a. True b. False 11 / 100 11) Periodontium which includes? a. Cementum b. Gingival c. All of above d. Periodontal ligament e. Alveolar bone 12 / 100 12) Mesenchymal stem cells are multi-potent stem cells which is able to differentiate to adult cell like? a. Cartilage, fat, muscle b. Bone, cartilage, and neurons c. Bone, cartilage, fat, muscle, and neurons d. Bone, liver, fat, skin, and muscle e. Liver, skin, bone, and cartilage 13 / 100 13) Morphology of mesenchymal stem cells ? a. Collagen-like b. Poly-conic-like c. Neuron-like d. Fibroblast-like 14 / 100 14) The biggest different of outcome between repair and regeneration on tissue is tissue scaring.? 14) a. False b. Tissue function c. Distortion of connective tissue d. True 15 / 100 15) Why transcription factors is the most import key to generate iPSc, cell reprogramming? a. They can regulate cell signalling b. They can control cell division c. They can regulate gene expression through cell signalling during cell division d. They can control gene expression 16 / 100 16) iPSc were generated by:? a. Growth factors. b. From adult cells. c. All of above. d. Introduced Yamanaka’s factors into adult cells. 17 / 100 17) The disadvantage of mesenchymal stem cells is that this stem cells are heterogenous in nature which hard to purify.? a. False b. True 18 / 100 18) What are the 4 steps of responses of mucosa to damage? a. Wound contraction, Hemostasis, Inflammatory response, and Proliferation b. Proliferation, Inflammatory response, Hemostasis, and Wound contraction c. Inflammatory response, Hemostasis, Proliferation, and Wound contraction d. Hemostasis, Inflammatory response, Proliferation, and Wound contraction 19 / 100 19) All four factors are absolutely necessary. In particular, the gene c-Myc is known to promote tumor growth in some cases, which would not affect iPSC usefulness in transplantation therapies. ? a. True b. False 20 / 100 20) Embryonic stem cells are derived from embryos at a developmental stage before the time that implantation would normally occur in? a. Placenta b. Uterus c. Vagina d. Oviduct e. In vitro fertilization 21 / 100 21) Four transcription factors (Oct4, Sox2, Klf4, and c-Myc) sometimes is called Yamanaka’s factors.? a. False b. True 22 / 100 22) Yamanaka’s factors were used to generating iPSc in 1st generation because:? a. There is no better way. b. They are ease to use. c. They were reported to able to express gene that like embryonic stem cells. d. All are corrects. 23 / 100 23) The biggest concern of using iPSc as a regenerative tool is the possible of cancer provoke due to infection of transcription factors.? a. True b. False 24 / 100 24) Cells responsible for repair and regeneration consist of? a. Endothelial cells and Platelets b. All of above c. Macrophages d. Mesenchymal cells and Parenchymal cells of the injury organs e. Platelets 25 / 100 25) Growth factors are proteins that regulate many aspects of cellular function, including survival, proliferation, migration and differentiation.? a. True b. False 26 / 100 26) The process by which information from a gene is used in the synthesis of a functional gene product such as a protein? a. Transcription factor b. Transcription c. Response element d. Gene expression e. Transcriptional regulation 27 / 100 27) How many types of intra oral tissue? a. 3 b. 4 c. 5 d. 2 28 / 100 28) In our blood, there is a small amount of stem cells which are ready to be differentiate to any cell type under the control of growth factors.? a. False b. True 29 / 100 29) Growth factor is sometimes used interchangeably among scientists with the term? a. Hormone b. Cytokine c. Vitamin d. Protein 30 / 100 30) What is the biggest conflict of using embryonic stem cells? a. Price and outcome b. Market c. Ethic d. Cell source 31 / 100 31) The inner cell mass cells have the potential to generate any cell type of the body, but after implantation, they are quickly depleted as they differentiate to other cell types with more limited developmental potential. ? a. True b. False 32 / 100 32) One strategy to accomplish this goal is nuclear reprogramming, a technique that involves experimentally inducing a stable change in the nucleus of a mature cell that can then be maintained and replicated as the cell divides through mitosis. ? a. False b. True 33 / 100 33) Why transcription factor C-Myc is no longer use for generating iPSc? a. It is reported to generate cancer in some cases b. It is difficult to work with other transcription factors c. It is difficult to obtain from nature d. It is not only less effective, but difficult to work with other transcription factors, and reported to generate cancer in some cases e. It is less effective 34 / 100 34) What do Growth Factors Do? a. Maintain optimum function of the target organ b. All above c. Enhance cellular proliferation d. Rejuvenate aging tissues e. Repair damaged cells 35 / 100 35) A specific sequence of DNA that a transcription factor binds to? a. Transcription b. Gene expression c. Transcriptional regulation d. Response element e. Transcription factor 36 / 100 36) Growth factor responsible for repair and regeneration: KGF, Keratinocyte growth factor? a. Growth and new generation of endovascular epithelial cells b. Cell growth, new generation and repair of blood vessel, and collagen product c. Promotion of epithelial cell growth, angiogenesis, and promotion of wound healing d. Tissue repair, cell growth, and collagen products e. Growth and new generation of keratinocyte 37 / 100 37) Repression, or suppression – decrease the rate of gene transcription? a. Upregulation b. Downregulation c. Corepressor d. Coactivator 38 / 100 38) Stem cell hierarchy from top to bottom? a. Unipotent, pluripotent, multipotent, totipotent b. Totipotent, multipotent, pluripotent, unipotent c. Totipotent, pluripotent, multipotent, unipotent d. Totipotent, pluripotent, unipotent, multipotent e. Unipotent, multipotent, pluripotent, totipotent 39 / 100 39) Why embryonic stem cells were banned for basic research? a. High cost b. All of above c. Violation ethic issue d. Risk of cancer 40 / 100 40) Mesenchymal stem cells is derived from bone marrow. So they can differentiate into hematopoietic cell line.? a. False b. True 41 / 100 41) What are the criteria for achieving to generate iPSc? a. An unstable change in the nucleus of a mature cells but can be maintained and replicated through cell division, mitosis. b. Cell can divides through mitosis c. Cell able to maintain and replication their stable change in cellular nucleus when their undergo mitosis. d. ell be maintained and replicated e. A stable change in the nucleus of a mature cell 42 / 100 42) What is the hierarchy of embryonic stem cells? a. Pluri-potent b. Multi-potent c. Toti-potent d. Uni-potent 43 / 100 43) In transcription an mRNA chain is generated, with both strands of the DNA double helix in the genome as a template.? a. True b. False 44 / 100 44) Mesenchymal stem cells can be extract from many types of tissue, but the most commence one is bone marrow.? a. False b. True 45 / 100 45) What are the gold standard transcription factors using for generating iPSc? a. Oct4, Sox2, Klf4, C-Myc b. Oct4, Sox4, Nanog, Lin28Oct4, Sox4, Nanog, Lin28Oct4, Sox4, Nanog, Lin28 c. Oct4, Sox2, Nanog, Lin28 d. Oct2, Sox4, Klf4, Lin28 46 / 100 46) Cre-Lox recombination is a site-specific recombinase technology, used to carry out deletions, insertions, translocations and inversions at specific sites? a. In RNA b. Inside of cellular cytoplasm c. In target animal d. In DNA e. In target cell 47 / 100 47) Ethical issues associated with the production of ESCs do apply to iPSCs, which offer a controversial strategy to generate patient-specific stem cell lines.? a. True b. False 48 / 100 48) What are the function of transcription factors? a. Co-enhancer b. Regulate gene expression c. Regulate in between coactivator and co-enhancer d. Coactivator 49 / 100 49) How many protein structure were classified? a. 3 b. 2 c. 1 d. 4 50 / 100 50) Who are/ is the pioneer of generating iPSc? a. Prof. Shinya Yamanaka b. Prof. Shinya Yamanaka and Sir John Gurdon c. Prof. Shinya Yamanak and his wife d. Prof. Shinya Yamanaka and his students 51 / 100 51) A protein that binds to DNA and regulates gene expression by promoting or suppressing transcription? a. Gene expression b. Transcription factor c. Response element d. Transcription e. Transcriptional regulation 52 / 100 52) Embryonic stem cells are derived from embryos at a developmental stage before the time that implantation would normally occur in the uterus. Normally, it takes about 10 days.? a. False b. True 53 / 100 53) Growth factor is sometimes used interchangeably among scientists with the term transcription factors.? a. True b. False 54 / 100 54) Embryonic stem cells were banned for basic research practice because it is an unethical practice. Moreover, it cannot create patient-match specific cell line.? a. False b. True 55 / 100 55) The ICM, inner cell mass, cells have the potential to generate any cell type of the body, after implantation, they are ————– as they differentiate to other cell types with more limited developmental potential. ? a. Quickly deleted b. No change c. Change d. Quickly depleted 56 / 100 56) Cytokines are a broad and loose category of long big proteins (~5–20 kDa) that are important in cell signalling.? a. False b. True 57 / 100 57) What is the biggest conflict of using induced pluri-potent stem cells? a. Immune rejection b. Cancer cause c. Reprogram efficiency d. Insertion of transcription factors 58 / 100 58) What is the outcome of regeneration? a. The outcome of regeneration is different from repair b. None of above c. The outcome of regeneration is no different from repair d. It is the response of tissue destroyed by an insult to a complete restoration of tissue architecture and functions. 59 / 100 59) What is Yamanaka’s factors? a. Oct4, Sox4, Klf2, C-Myc b. Oct4, Sox2, Klf4, C-Myc c. Oct2, Sox2, Klf4, C-Myc d. Oct2, Sox4, Klf2, C-Myc 60 / 100 60) Transcription factor is a protein that controls the rate of transcription of genetic information from messenger RNA to DNA, by binding to a specific ribosomes.? a. True b. False 61 / 100 61) Growth factor responsible for repair and regeneration: PDGF, Platelet derived growth factor? a. Tissue repair, cell growth, and collagen products. b. Growth and new generation of keratinocyte c. Cell growth, new generation and repair of blood vessel, and collagen product. d. Promotion of epithelial cell growth, angiogenesis, and promotion of wound healing e. Growth and new generation of endovascular epithelial cells 62 / 100 62) Growth factors and their receptors can be grouped into ‘superfamilies,’ based upon shared features of ? a. Protein sequence b. Amino acid sequence c. Anatomy of protein d. Structural of protein folding 63 / 100 63) iPSCs were reprogrammed to an embryonic stem cell-like state by introducing genes important for maintaining the essential properties of embryonic stem cells (ESCs). ? a. True b. False 64 / 100 64) ES will support clinical research on the differentiation and function of human tissues and provide material for testing that may improve the safety and efficacy of human drugs ? a. True b. False 65 / 100 65) Transcription can be divided into 3 stages: initiation, elongation, and termination, each regulated by a large number of proteins such as transcription factors? a. False b. True 66 / 100 66) Controlling the rate of gene transcription for example by helping or hindering RNA polymerase binding to DNA? a. Response element b. Transcriptional regulation c. Gene expression d. Transcription e. Transcription factor 67 / 100 67) What is the hierarchy of mesenchymal stem cells? a. Pluri-potent b. Multi-potent c. Toti-potent d. Uni-potent 68 / 100 68) Transcription factors sometime is called ? a. Sequence-specific mRNA-binding factors b. Sequence-specific DNA-binding factors c. Sequence-specific RNA-binding factors d. Sequence-specific tRNA-binding factors 69 / 100 69) The first differentiation event in humans occurs at approximately —— days of development, when an outer layer of cells committed to becoming part of the placenta (the trophectoderm) separates from the inner cell mass (ICM). ? a. 1-3 day b. 10-14 days c. 3-5 days d. 5-7 days 70 / 100 70) Yamanaka’s factors were chosen because they were known to be involved in the maintenance of pluripotency, which is the capability to generate all other cell types of the body.? a. False b. True 71 / 100 71) Growth factors typically act as signalling molecules between cells. Examples are cytokines and hormones that bind to specific receptors on the cytoplasm of their target cells.? a. True b. False 72 / 100 72) Transcription factor sometimes is called sequence-specific DNA-binding factor.? a. True b. False 73 / 100 73) Work flow of generating iPSc? a. Isolate and culture host cell, using transcription factors, harvest cell and culture under feeder layer, get an iPSc. b. Isolate and culture host cell, using lentinovirus, harvest cell and culture under feeder layer, get an iPSc. c. Isolate and culture host cell, using retrovirus, harvest cell and culture under feeder layer, get an iPSc. d. Isolate and culture host cell, using adenovirus, harvest cell and culture under feeder layer, get an iPSc. 74 / 100 74) Activation, or promotion – increase the rate of gene transcription? a. Downregulation b. Upregulation c. Coactivator d. Corepressor 75 / 100 75) A protein that works with transcription factors to decrease the rate of gene transcription? a. Coactivator b. Downregulation c. Corepressor d. Upregulation 76 / 100 76) Protein synthesis consist of 2 steps. What are they, and where do they take place? a. Transcription occurs in cytoplasm, and translation occurs in nucleolus b. Transcription occurs in nucleolus, and translation occurs in cytoplasm c. Transcription and translation both occurs in nucleolus d. Transcription and translation both occurs in cytoplasm 77 / 100 77) When the first mouse iPSc were generated and published? a. 2008 b. 2007 c. 2006 d. 2005 78 / 100 78) Upon introduction of reprogramming factors, cells begin to form colonies that resemble pluripotent stem cells, which can be isolated based on their:? a. All are corrects. b. Morphology c. Through expression of surface markers d. Reporter genes. e. Conditions that select for their growth. 79 / 100 79) The main reason for formation of scale is due to detraction of connective tissue.? a. False b. True 80 / 100 80) Chromatin immunoprecipitation (ChIP) is a type of immunoprecipitation experimental technique used to investigate the interaction between? a. Proteins and DNA in the cell b. RNA and DNA c. Proteins and RNA d. DNA and RNA e. Proteins and DNA outside the cell 81 / 100 81) What is the biggest conflict of using mesenchymal stem cells? a. Cancer cause b. Heterogenous nature c. Homogenous nature d. Ethic 82 / 100 82) Transcription factors is a protein that control the rate of transcription of genetic information from? a. DNA to mRNA b. DNA to RNA c. RNA to DNA d. DNA to tRNA 83 / 100 83) Growth factor responsible for repair and regeneration: TGF-b, Transforming growth factor b.? a. Growth and new generation of keratinocyte b. Promotion of epithelial cell growth, angiogenesis, and promotion of wound healing c. Promotion of wound healing. d. Cell growth, new generation and repair of blood vessel, and collagen product. e. Growth and new generation of endovascular epithelial cells 84 / 100 84) Because ES cells can proliferate without limit and can contribute to any cell type, human ES cells offer an unprecedented access to tissues from the human body. ? a. False b. True 85 / 100 85) Growth factor responsible for repair and regeneration: VEGF, Vascular endothelial growth factor? a. Cell growth, new generation and repair of blood vessel, and collagen product. b. Promotion of epithelial cell growth, angiogenesis, and promotion of wound healing c. Growth and new generation of endovascular epithelial cells d. Tissue repair, cell growth, and collagen products. e. Growth and new generation of keratinocyte 86 / 100 86) Growth factor responsible for repair and regeneration: EGF, Epithermal growth factor? a. Growth and new generation of endovascular epithelial cells b. Tissue repair, cell growth, and collagen products. c. Cell growth, new generation and repair of blood vessel, and collagen product d. Growth and new generation of keratinocyte e. Promotion of epithelial cell growth, angiogenesis, and promotion of wound healing 87 / 100 87) What is the hierarchy of induced pluripotent stem cells? a. Multi-potent b. Pluri-potent c. Uni-potent d. Toti-potent 88 / 100 88) Mesenchymal stem cells can be extracted from marrow and non-marrow.? a. True b. False 89 / 100 89) A,growth factor is a naturally occurring substance capable of stimulating cellular growth, proliferation, healing, and cellular differentiation. Usually it is a protein or a steroid hormone.? a. False b. True 90 / 100 90) When the first human iPSc were generated and published? a. 2007 b. 2006 c. 2008 d. 2005 91 / 100 91) In the future, possible dentist can use dental pulp stem cells, 3rd mandibular molar, in cell bank due to their pluri-potent.? a. True b. False 92 / 100 92) If the ICM, inner cell mass, is removed from its normal embryonic environment and cultured under appropriate conditions, the ICM-derived cells can ——————————————- indefinitely and still maintain the developmental potential to form any cell type of the body? a. Continue to proliferate and replicate themselves b. Growth and produce more different kind of cell types in the body c. Still alive and growth well under appropriate conditions d. Differentiate in to any cell types of the body 93 / 100 93) Growth factor is sometimes used interchangeably among scientists with the term cytokine.? a. False b. True 94 / 100 94) Some important human diseases are caused by the death or dysfunction of one or a few cell types, e.g., insulin-producing cells in diabetes or dopaminergic neurons in Parkinson’s disease. Therefore, understanding and using stem cells as tool to study this disease model provide a better understand this dysfunction of cell types.? a. True b. False 95 / 100 95) Why generation of iPSc is so attractive to scientist worldwide? a. Ease to perform with no risk of cancer and ethical issue b. Every patient could generation their own cell line without concern of ethical issue and immune rejection c. Generation of patient-specific cell line and immune match d. No concern on cancer risk, and cheap e. No controversial in term of ethical issue, and ready for use 96 / 100 96) Mesenchymal stem cells have been confirmed able to differentiated into neuron cell with function? a. False b. True 97 / 100 97) iPSc provided unlimited supplies of ________ cells could be used to generate transplants without the risk of immune rejection.? a. Autologous b. Allogous c. Xenologous 98 / 100 98) Event during or following protein translation ? a. Post-translational modification and protein folding b. Proteolysis and protein folding c. Proteolysis and post-translatoinal modification d. Proteolysis and modification 99 / 100 99) An undifferentiated cell of a multicellular organism which is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cell arise by differentiation.? a. iPSc: Induced pluri-potent stem cells b. MSCs: Mesenchymal stem cells c. Stem cells d. ESCs: Embryonic stem cells 100 / 100 100) A protein that works with transcription factors to increase the rate of gene transcription? a. Upregulation b. Downregulation c. Coactivator d. Corepressor Your score isThe average score is 50% Facebook 0% Restart quiz Any comments? Send feedback