Given what we know, we can confirm that the cell theory states that all cells come from preexisting cells despite the cells in a multicellular organism being so different from one another due to cellular differentiation.
<h3>What do we know about cellular differentiation?</h3>
- Cellular differentiation involves the selective expression of DNA.
- When only specific parts of the DNA sequence are expressed, and thus only specific proteins are formed, a cell can differentiate.
- This allows the cells to specialize themselves despite all of them containing the same DNA.
- Over time, this has allowed all cells, despite sharing a common origin, to become vastly different.
Therefore, given that cellular differentiation controls what genes of a cell are expressed in order to allow the cell to specialize itself into a specific cell type, this explains why even though all cells share a common origin, they can all be very distinct.
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<span>Sequence complete RNA strands directly and in real-time. Or, cDNA ‘strand-switching’ protocol also allows full-length sequencing of cDNA, either with or without PCR amplification.</span>
Answer:
The correct answer is - B.directional selection.
Explanation:
When a bacterial colony is exposed to an antibiotic the maximum number of the bacteria dies due to noo resistane and some of survive even with no or very less resistance to the antibiotic and reproduce.
Over many generations the survived and continuosuly divivng resitant bacteria become more and more with higher frequency and ultimately evolved to a resistance strain of the bacteria for the antibiotic. Such mutation is directional selection as the frequency of the resistance bacteria going from no resistance to a high amount of resistance is unidirectional and progresive.
Answer:
It is not important for the cell not to run glycolysis and gluconeogenesis at high rate simultaneously because body carry out various metabolic pathaways with respect to body"s requirement for metabolites .
Explanation:
Human bodyphysiology helps to maintain homeostasis of various metabolic intermediates within our body.
It is not that the glycolytic intermediates and end product such as pyruvate always enter the gluconeogenesis process because pyruvate have different metabolic fates beside acting as a precursor for glucose biosynthesis.
Cell does not require glycolytic intermediates and gluconeogenesis intermediates at the same time.
That"s why it is important for the cell not to run glycolysis and gluconeogenesis simultaneously.
Answer:
Stress
Explanation:
Environmental stressing agent such as starvation or exposure to toxic chemicals may cause the Phage Lambda to excise and enter the lytic cycle.
