Researchers prefer to use embryonic stem cells instead of adult stem cells because embryonic stem cell can differentiate into more type of cells.Human embryonic stem (ES) cells capture the imagination because they are immortal and have an almost unlimited developmental potential. Embryonic stem cells are pluripotent cells not unipotent. After many months of growth in culture dishes, these remarkable cells maintain the ability to form cells ranging from muscle to nerve to blood—potentially any cell type that makes up the body.
Answer: Cells have specific jobs they have to do, like for example, reproduction, cells help in the reproduction of organisms. Energy metabolism, some cells help with nutrients and oxygen. Regeneration, if you get a cut or a scrape, some cells help to heal that wound. And information transfer, this is when we get information in our brain.
Hope this helps!
Google it. Quickly write down some bullet points. Write a sentence per bullet point and then analyse each one
Answer:
a) The enhancer site is a distal control site many nucleotides upstream from the promoter site, and activates the initiation complex of transcription.
Explanation:
Enhancers are the regulatory DNA sequences that are generally located quite away from the coding regions of a gene. These sequences are mostly present upstream of promoter sequences. Enhancers regulate the gene expression by stimulating the formation of an active transcription initiation complex and thereby, increase the rate of RNA synthesis. Enhancers also serve as the binding site for specific regulatory proteins. These proteins bound to the enhancers then activate transcription by interacting with the proteins bound to the promoters.
Answer is 256.
In 1992 the trout population was 4. Thus, initial population of trout is 4. In 1993 it grew to (4)², that is 4×4 = 16, in 1994 it grew (4)³, that is 4×4×4 = 64. This shows the trout has grown exponentially. Therefore, the trout population will be (4)⁴, that is 4×4×4×4 = 256.
