RNA is an intermediate macromolecule fabricated using genetic code resident in DNA and there are multiple types of RNA. The immense complexity of DNA mixed with the catch-22 of protein coding and construction convinced naturalistic biologists that a DNA/protein complex system is too complex to have arisen naturally as first organism for the origin of life. The function of RNA is varied but does include protein synthesis, proteins being the key structure within all organisms. Lab experiments demonstrated that some types of RNA could be assembled under the right conditions, however, the key function of an RNA assembly to replicate itself has not been possible, and the conditions under which RNA assemblies have been produced are not geochemically relevant to primordial Earth conditions. Additionally, There
are no natural forces or processes capable of the complex organization, even in
the simplest form of RNA cited. This lack includes mitigation of RNA mutations,
rapid degeneration, affinity for contamination, and the probable
impossibilities of “chance.”
The simpler level of complexity and the potential for replication have made RNA attractive, but it absolutely fails to solve the issue of origin of life functionality.
Answer:
The dissolving power of water is very important for life on Earth. Wherever water goes, it carries dissolved chemicals, minerals, and nutrients that are used to support living things. Because of their polarity, water molecules are strongly attracted to one another, which gives water a high surface tension.
Answer:
A. The complementary shapes of an enzyme and a substrate
Explanation:
The Lock-and-Key model was made to show how an enzyme's active zone fits a substrate and how they bond together. It correlates just like a lock and a key; you have to have the correct-shaped key in order to open a lock. Same process of thought with the enzymes; you must have the same shape for both in order to bind together,
Answer:
The correct answer is option c, that is, alternative splicing.
Explanation:
When a solitary pre-mRNA molecule is processed in two or more than two ways to produce two or more RNA it is known as alternative splicing. This distinct RNA post-translation produces different products of genes. It takes place when one 5 prime splice site of the intron is associated with more than one 3 prime splice sites and is possibly mediated by the structural conformation of RNA and some of the splicing regulators, like SR protein.
The alternative splicing takes place distinctly in different cell types and is also monitored by the cell type-specific factor. The remaining of the options are not correct as these options are related to the process control mechanism.
