What is exogenote and endogenote?
An exogenote is a piece of donor DNA that is involved in the mating of prokaryotic organisms. Transferred DNA of Hfr (high frequency of recombination) is called exogenote and homologous part of F (fertility factor) genophore is called endogenote.
What is DPPC made of?
Dipalmitoylphosphatidylcholine (DPPC) is a phospholipid (and a lecithin) consisting of two C16 palmitic acid groups attached to a phosphatidylcholine head-group. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
What type of phospholipid is DPPC?
Phosphatidylcholine (PC) is the major phospholipid of pulmonary surfactant and it is hypothesized that PC and its subspecies modulate the functions of alveolar macrophages. The most abundant of these subspecies is dipalmitoylphosphatidylcholine (DPPC).
What are Endogenote exogenote and Merozygote?
Any DNA fragment that has been transferred from a donor cell to recipient cell is exogenote. Native DNA of recipient bacterial cell is the endogenote. In this gene transfer, only a part of the donor genome is received by the recipient. The resultant partial diploids are referred as merozygotes.
What is an Exconjugant?
A female bacterial cell that has just been in conjugation with a male and that contains a fragment of male DNA.
Is DPPC a lecithin?
The main phospholipid in surfactant is dipalmitoylphosphatidylcholine (DPPC), also known as lecithin. It is surface active because of its hydrophilic head and hydrophobic tails (Fig. 46.7). However, DPPC by itself does not adsorb efficiently at the air–liquid interface and is in the form of a gel at body temperature.
What is meant by Merozygote?
Merozygote is a state when a cell, usually bacterial, is temporarily partial diploid as result of DNA transfer processes like conjugation. One example of how merozygotes can be formed is the transfer of genetic material of an Hfr cell to an F- cell through conjugation.
Why is bacterial zygote called Merozygote?
Solution : In sexual reproduction of bacteria parts of donar DNA is integrated with the parts of recipient DNA, thus a partial diploid condition is formed. It is callled merozygote.
What is lecithin used for?
Lecithin is a food additive that comes from several sources — one of them being soy. It’s generally used as an emulsifier, or lubricant, when added to food, but also has uses as an antioxidant and flavor protector.
How does DPPC work?
DPPC is generally accepted as being the lipid responsible for generating a near-zero surface tension at the interface during compression [13]. The two saturated acyl chains enable the lipid to form a tightly packed monolayer which can generate these low surface tension values without collapsing.
How long does it take surfactant to work?
One systematic review of 13 RCTs associated administering animal-derived surfactant to infants with established RDS with significant improvement in oxygenation, ventilation requirements, and reduction of air leak, mortality before hospital discharge, and in death or BPD at 28 days, compared with placebo.
How does surfactant work in lungs?
Surfactant is released from the lung cells and spreads across the tissue that surrounds alveoli. This substance lowers surface tension, which keeps the alveoli from collapsing after exhalation and makes breathing easy.
Why bacterial genetics is said to be Merozygote?
What is meant by the term cotransformation?
Cotransformation is the simultaneous transformation of two or more genes. Only genes in the same chromosomal vicinity can be transformed; the closer together the genes lie, the more frequently they will be cotransformed.
¿Qué es la clasificación de exógeno?
Desde un perspectiva más general, debemos recordar que, en el ámbito académico, se suele manejar la clasificación de exógeno para los factores externos que explican determinados fenómenos. Por ejemplo, puede ser que un factor exógeno como la caída de un meteorito tenga un impacto en la superficie terrestre.
¿Qué es lo opuesto a exógeno?
Lo opuesto a exógeno es endógeno. Es decir, una variable que es interna a un modelo o que de manera interna determina un fenómeno. Por ejemplo, una variable endógena al crecimiento de la población es la tasa de natalidad.
¿Cuál es la diferencia entre exógeno y endógeno?
Exógeno y endógeno Lo opuesto a exógeno es endógeno. Es decir, una variable que es interna a un modelo o que de manera interna determina un fenómeno. Por ejemplo, una variable endógena al crecimiento de la población es la tasa de natalidad.
¿Qué es la energía exógena?
En ecología y en las ciencias ambientales, se emplea el término “energía exógena” “en contraposición a “energía endógena”) para referirse a aquella producida o consumida por el hombre durante sus actividades y que no proviene de su propio cuerpo. Así se incluye la energía liberada por los hidrocarburos para el transporte o la generación eléctrica.