The correct answer is option A, that is, theories.
A restricted explanation of a phenomenon is referred to as a hypothesis. A statement regarding an observed phenomenon or a unifying concept is considered as a law. A law differs from a scientific theory in that they do not postulate an explanation or mechanism of the phenomenon, they are just a filtration of the outcomes of recurrent observation.
However, a scientific theory refers to a thorough explanation of the observed phenomenon.
There are many reasons why researchers use mice as animal models in science and medicine. A huge reason why mice are used is that their genetics and behavioral characteristics are very close to humans. So, having an animal model for Huntington’s Disease would help scientists be able to study the disease further and make advancements in treatment options in a far less costly and a much safer way than studying it in humans. Mice as animal models can also help in a huge way because their lifespans are very short compared to humans (they only live about 2-3 years). This allows scientists to be able to study the affects of the gene over many generations in a much shorter amount of time.
Answer: Proteins are a category of macromolecules which will perform a various range of functions for the cell. they assist in metabolism by providing structural support and by acting as enzymes, carriers or as hormones. The building blocks of proteins are amino acids
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Answer:
cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
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