The answer is negative controls. These are groups where no phenomenon is probable. They ensure that there is no effect when there should be no effect. Where there are only two possible outcomes, e.g. positive or negative, if the treatment group and the negative control both produce a negative result, it can be concluded that the treatment had no effect. If the negative control group and the treatment group both yield a positive result, it can be inferred that a puzzling variable is involved in the occurrence under study, and the positive results are not only due to the treatment. In other examples, outcomes might be measured as lengths, times, percentages, and so forth.
It penetrates the skin and can cause mutations.
Answer:
C. Viruses
Explanation:
Viruses lack the properties of living things. They have no energy metabolism, they do not grow, they produce no waste products, and they do not respond to stimuli. They also don't reproduce independently but must replicate by invading living cells.
Based on the given situation above about Gene expression, it is considered an example of gene expression u<span>ntil the protein is trimmed, it is not useful to the cell. Therefore, the protein should not be trimmed. Hope this answers your question. Have a great day ahead!</span>
Water. the only 4 macromolecules are nucleic acid, carbohydrate, lipids, and protein
