Answer:b.are required for the expression of specific protein-encoding genes
Explanation:
Transcription factors are proteins that bind to enzyme RNA polymerase to aid transcription( coping of information on DNA to an intermediate mRNA.
They control the expression of a particular gene. A transcriptor can be a repressor or enhancer. A repressor when they inhibit the action of RNA polymerase by blocking it from attaching to promoter sequence or enhancer by binding to RNA polymerase to enhance transcription.
Transcriptor protein can work alone or work with other protein such as silencer.
Secondary succession
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Answer:
To increase the preservation of an element, it should go through all the stages as it should, which could promptly take it to its ruin phase.
This must be analyzed from the theoretical point of view, it will be worthwhile for the human to go so fast through the phases of his life, shortening the chances of subsistence or we must burn all stages in due time.
The root word of Unicellular already tells you the answer. Uni means only one cell. So the answer is one cell.
Ethanol is a biofuel, which can <span>be fermented from various sources, but in United States, most of Ethanol is made from "Corn"
In short, Your Answer would be Option A
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