The electrical property of the membrane changes. There is a small undershoot in the membrane potential.
It’s mechanical because it’s fs not weathering
Explanation:
cell B does less work than cell A
Glucose is the preferable source of energy for E. coli cells. By adding small amounts of glucose, 0.05% in this case, it would enable cell growth to proceed as usual until it has reached mid log growth phase. At this point, the small amount of glucose added should have been depleted and the E.coli cell will now be dependent on lactose present as its source of nutrients. Lactose will also inactivate lac repressors and given the lack of glucose, CAP binding to high amounts of cAMP will be activated and increase expression of lac operon genes.
It should be noted that this system of expression may not tightly regulate the expression of lac operon before the E.Coli reaches exponential phase. As lactose is still present, lac repressors will be inactivated throughout the entire experiment and hence small amounts of proteins might be produced even when not auto-induced. After auto-induction, CAP-cAMP protein complex will simply upregulate expression of lac operon genes.
Answer:
According to the diagram and the interaction of the structures to express information in the cell, it is true that:
- Molecule B can be used to produce molecule A.
- Molecule A can be used to produce molecule C.
Explanation:
Molecule A is a double stranded DNA, molecule B is a strand of RNA and molecule C is an amino acid encoded by a codon.
The DNA is capable of splitting and from one strand producing the messenger RNA, in the process of transcription.
Messenger RNA contains a sequence of bases, and the set of 3 bases of RNA form a triplet or codon. A specific amino acid can be formed from a codon. This process is called translation.
The way in which molecules A, B and C interact is through the processes of transcription and translation, making it possible to use genetic information for protein synthesis.
The other options are not possible because:
- <em>Only DNA can replicate, RNA needs the transcription to be synthesized.
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- <em>Molecule B and C do not interact so that the amino acids are together, but this depends on the sequence of bases in the RNA.</em>
