Scientists Fabricate 2D Protein Monolayer That Can Help to Study Diseases like Amyloidosis

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Amyloidosis is a rare disease characterized by the buildup of amyloid proteins in organs, affecting their function.

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It is a method used in material science and surface chemistry to create ultra-thin films, often of a single molecule thickness. This technique involves the transfer of a monolayer of molecules from the surface of a liquid (usually water) onto a solid substrate. It is named after Irving Langmuir and Katharine Blodgett, who pioneered this technique.

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Lysozymes are enzymes that play an important role in the body's immune system. They are found in various body fluids, such as saliva, mucus, and tears, and are also present in egg white. The primary function of lysozymes is to break down the cell walls of certain bacteria. They do this by cleaving the glycosidic bonds in peptidoglycan, a major component of bacterial cell walls, leading to the destruction of the bacteria. This antibacterial property makes lysozymes an important part of the innate immune system, providing a first line of defense against bacterial infections.

Aerial metagenomics is a scientific method that collects and analyzes genetic material (DNA or RNA) from airborne particles in the environment. Microorganisms such as bacteria, fungus, viruses, and other living material can be found in these particles.

Aerial metagenomics entails collecting air samples from a variety of locales, including cities, woods, oceans, and even indoor habitats. Sampling can be done with specialized air filters or by collecting particles suspended in the air directly.

Following the collection of air samples, DNA extraction procedures are used to isolate the genetic material of the microorganisms present in the samples. This phase is critical for gathering the genetic data needed for future research.

Aerial metagenomics analyzes the genetic material collected from air samples using modern sequencing technologies such as next-generation sequencing. These methods enable the simultaneous and quick sequencing of millions of DNA fragments.

Aerial metagenomics gives information about the microbial diversity in the atmosphere. It aids in the identification of microorganisms in the air, such as bacteria, viruses, fungus, and archaea. This information advances our understanding of microbial ecology and microorganism dispersal patterns in various environments.

Therefore, option (a) is the correct answer.

Pronuclear Transfer entails the movement of pronuclei from one zygote to another. This process begins with the fertilisation of healthy donated egg/eggs delivered by the mitochondrial donor with the sperm of the intended male parent.

The impacted oocytes of the intending mother are fertilized with the sperm of the intending father. The fertilised oocytes are then allowed to mature until the early zygote stage, where the pronuclei are evident.

The pronuclei of zygotes generated from donated oocytes are extracted and discarded within a karyoplast using micromanipulation technology. The resultant zygotes contain nuclear DNA from both intended parents as well as mtDNA from a donor. The zygote is subsequently placed in the uterus of the mother.

Three-parent babies are offspring formed from the genetic material of one man and two women.

Pronuclear transfer mitigates the consequences of mutations in the DNA of mitochondrial cellular organelles. As a result, this technology is employed to avoid mitochondrial disorders in progeny.

Therefore, option (d) is the correct answer.

Artificial chromosomes can be manufactured by connecting DNA segments from different species' cells.

Functional chromosomes cannot be generated using DNA from various species' cells. Hence, option (a) is incorrect.

Cambridge University scientists have built the world's first living organism with a wholly synthetic and drastically changed DNA code. Artificial Gene Synthesis is the technique of creating pieces of artificial functioning DNA in laboratories. Hence, option (b) is correct.

Cloning is the process of making a portion of DNA extracted from an animal cell replicate outside of a living cell in a laboratory. Hence, option (c) is correct.

Plant and animal tissue culture technology allows cells extracted from plants and animals to undergo cell division on laboratory Petri dishes. Hence, option (d) is correct.

Therefore, option (a) is the correct answer.