Answer: Low, High, Lac repressor
Explanation:
The expression of the lac structural genes is low when lactose is absent from the culture medium and is high when lactose is added, because lactose binds to the lac repressor and inactivates it.
When Lactose is present the lac genes is expressed because the substrate lactose act as inducer and binds to the lac repressor and inactivate it. So the gene is expressed.
But in the absence of lactose, the lac repressor binds the DNA and prevent the expression of the lac genes
1.
the Changes of the Human Bodies
2. Shapes Different Careers
3. Provides Answers to Large-scale Problems
4. Teaches Concepts on Basic Living
5. Helps in Answering the Fundamental Questions About Life
6. Have another for (good luck) Paves Way for Scientific Investigations
The answer is TRUE because burning of coal is used to heat water
Answer:
Proteins named transcription factors, help set specific genes on or off by binding to the DNA.
Explanation:
- A co-activator is the type of transcription factor that binds to the activators to increase the process of transcription.
- An activator is the type of transcription factor that increases transcription.
- A repressor is the type of transcription factor that decreases or prevents the transcription by blocking the RNA polymerase to the promoter.
- A general transcription factor, also known as a basal transcription factor, is a type of transcription factor that initiates transcription.
Tendons, nerves, blood vessels, and bones can found in every skeletal muscle.
