Ur intercostle muscle between ur ribs
When using the term 'life form' I assume you are speaking of animals, bacteria, etc. Scientists take years to find their desired conclusion because of how the environment tends to change quite frequently (Depending on where the creature lives). The earth is constantly revolving and rotating, which causes changes in the environment. These changes affect the animals behavior, eating habits, and overall chances of survival. A factor that must also be considered is that scientists have to examine these creatures in their natural habitat which can be an issue depending on where they live. For example, if I were to study the behavioral patterns of a Leopard, it would be extremely difficult to do so because the Leopards are specifically keen at camouflaging in their environment. That would make observing its behavioral patterns very frustrating and time consuming. In a way, mother nature is always against us.
(Hope this helps)
tRNA( Transfer RNA) molecules carry amino acids to the site of protein synthesis
Explanation:
Proteins are the building blocks of the cells. The process of protein synthesis involves transcription and translation of the genetic information stored in the DNA. After the process of transcription which is the process to get RNA molecules from the DNA. After this process, during protein synthesis tRNA carries amino acids to the ribosomes is the structure where protein synthesis takes place.