Oral Biology Test

What is the hierarchy of induced pluripotent stem cells?

Growth factor responsible for repair and regeneration: EGF, Epithermal growth factor?

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.?

Mesenchymal stem cells are multi-potent stem cells which is able to differentiate to adult cell like?

Cytokines are a broad and loose category of long big proteins (~5–20 kDa) that are important in cell signalling.?

Embryonic stem cells are derived from embryos at a developmental stage before the time that implantation would normally occur in?

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. ?

Growth factor responsible for repair and regeneration: FGF, fibroblast growth factor.?

Growth factors are proteins that regulate many aspects of cellular function, including survival, proliferation, migration and differentiation.?

Periodontium which includes?

Cells responsible for repair and regeneration consist of?

Cre-Lox recombination is a site-specific recombinase technology, used to carry out deletions, insertions, translocations and inversions at specific sites?

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.?

Retroviruses used to deliver the four transcription factors in the earliest studies is safe to generating iPSCs.?

Why transcription factors is the most import key to generate iPSc, cell reprogramming?

Four transcription factors (Oct4, Sox2, Klf4, and c-Myc) sometimes is called Yamanaka’s factors.?

During tooth eruption into the oral cavity, what happens to the epithelial covering of the enamel:

Cavity formation in a tooth, due to dental caries is due to:

Branchial arches sharing in tongue development are:

One of the following is a component of tooth germ:

All of the following is true of parotid glands, except:

An oblique facial cleft is formed when the:

Dental follicle cells:

The Hertwing’s epithelial root sheath is composed of:

Widely accepted theory of dental caries is:

All of the following is a function of dental sac except:

Pharyngeal pouches:

Bacteria responsible for initiation of caries is:

Function of gingival cervicular fluid is:

The epithelial component of the tooth germ is known as:

Chewing sequence could be divided into:

All the statement below is true about the classification of taste, except:

In a developing tooth, if Hertwig’s sheath and the epithelial diaphragm were failed to form, the resulting tooth would exhibit:

The medial pterygoid follows the same angle as masseter arising from the medial pterygoid plate, where does it attach on the mandible at:

Concerning teratogens and their effect on fetal development:

The following induces the dental papilla cells to be differentiated into odontoblasts:

First stage of deglutition is:

In human’s fertilization normally occurs in:

The term for a fertilized egg from conception until the end of two months development:

The enamel organ:

The bell stage occurs between the:

Another term for the deglutition of food is:

The apposition stage of tooth development begins:

Four basic qualities:

One of the following characterize prenatal development It is:

Which minor salivary glands are purely serous:

Dental caries can be classified with respect to the site of the lesion:

During tooth eruption, the permanent successors of the primary teeth move occlusal and:

In patient with reduced salivary flow the carious incidence is:

The development of the root begins when:

Fluorosis is caused by:

Concerning cleft lips and cleft palates:

The cell rests of Malassez are derivatives of:

Calcified tissues of the tooth are derived from:

If the process of morphogenesis is disturbed:

The following organisms is found in deep carious lesions rather than in incipient lesions is:

The Hertwig epithelial root sheath of disintegrates:

The maxillary processes:

Second stage of deglutition is:

If Hertwig’s epithelial root sheath does not disintegrate: