Answer:
DNA
Explanation:
Thymine is one of the four nucleobases that pairs with adenine to make up DNA, also called 5-methyluracil. It is replaced by uracil to make RNA molecules during transcription.
Theferore the unknown chemical analyzed was DNA because thymine is found in DNA and not in RNA molecules.
The correct answer is: A. A change in a cell's genetic material.
Mutations occur in DNA as a result of mistakes during the DNA replication (when repair mechanisms don’t fix it) or as the result of environmental factors (e.g. UV light). Mutations can have positive impact, by increasing the genetic variation or can have negative effect, causing the diseases or cancer.
Answer:
The correct answer is - Inhibits cell cycle progression.
Explanation:
Smoking marijuana affects the body in several ways and also causes mutation to the DNA which leads to the disruption of the cell cycle. The major effect on the cell cycle of marijuana is due to the chemical present in it known as #9
-Tetrahydrocannabinol.
THC or #9 -Tetrahydrocannabinol inhibits the cell cycle progression by arresting the cell cycle in different stages that prevent the cell to proliferate and it is proposed for the research in treating tumors.