A DRUG KILLS ONLY THE RAPID GROWING CELLS is most likely a cancer treatment.
A. a drug that kills only rapidly dividing cells
<u>Explanation:</u>
Chemotherapy is a drug treatment that uses powerful chemicals to kills the fast-growing cell in your body. The cancer cells are rapidly growing cells, so it can be cured by the effective drug to cure cancer in the body. chemotherapy is most often used to treat cancer.
Since the cancer cells grow and multiply much more quickly than most cells in our body. It is given with the curative intent or it may prolong life on to reduce symptoms in the cancer patients.
It’s important for controlling chronic conditions, treating temporary conditions and overall long term health and well being
B. Subgroups
<span>When constructing a dichotomous key, the first step is to look at the group of objects or organisms and separate them into two groups based on a single distinguishing characteristic. Then continue to separate each of the groups until each object has its own separate set of characteristics.</span>
Transcription factors are necessary for an initiation of transcription at a regulated gene but not sufficient.
Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:
1. Initiation
• RNA polymerase with transcriptional factors bind to gene promoter Transcription factors can enhance the interaction between RNA polymerase and a DNA sequence- promoter, encouraging the expression of the gene. Such transcription factors are called activators. Otherwise, when the gene expression is inhibited, factors are called repressors and they bind to sequence –operator.
• RNA polymerase unwinds DNA double helix (transcription bubble is formed)
2. Elongation
• RNA polymerases adds nucleotides complementary to DNA
3. Termination
• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)
• Formed complementary RNA strand is released from DNA-RNA complex
