The statement above is TRUE.
Negative transcriptional regulation involves the binding of the repressor protein to the operator in order to prevent a gene from been expressed. Transcription in eukaryotic cells is controlled by proteins which bind to specific regulatory sequences and modulate the activity of the enzyme concerned. Regulation of transcription can be negative or positive.
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C, processes (it needs to be longer so ignore this part)
This doesn’t give enough information
Answer:
The correct answer will be-
1. False
2. True
3. True
4. True
5. True
Explanation:
1. Prokaryotes do not possess nucleus in their cell which is present in eukaryotes, so prokaryotes divide by amitotic division whereas eukaryotes divide by both mitosis and meiosis.
2. Cytokinesis is the phase of the cell cycle during which the cytoplasmic content of a cell divides and takes place after nuclear division.
3. Mitosis is the phase of cell cycle which is marked by the division of the nucleus and nuclear contents so also known as karyokinesis.
4. DNA replication is the process which produces an exact copy of the parental genome thus produces identical chromosomes.
5. The longest phase of the cell cycle is the G₁ phase in which the cell remains for about 11 hours. During this period the cell prepares itself for DNA replication.