Foreign DNA is spliced into a plasmid vector. The recombined plasmid then carries the foreign DNA into the bacterial cell, where it replicates independently of the bacterial chromosome. is it True or False?
If the foreign DNA contained a gene for human growth hormone, each cell will make the hormone.
What is different about the DNA fragments created by digestion with Hpa I as compared to the DNA fragments created by digestion with Eco RI?
For example if a person died, how long post-mortem could a lab identify their DNA, and what would be the best cells to tell what the person looked like and their biological construction? I’m doing some science fiction writing and I’m hoping someone could help me with this research.
My son has a 15 month check up today and I am debating if I should get him the chicken pox vaccine. We have made our own vaccine guideline and we only get one shot at a time and he didn’t get some vaccines at all. Chicken pox in most cases is not serious unless one has a compromised immune system. My son is healthy. If someone catches it, it is treatable, unlike some other diseases. The controversial ingredients are: MSG, DNA and proteins from human cells, and cow fetus serum. Now some side effects of the vaccine: rash, flu-like symptons, bleeding problems, pneumonia, skin infections, Guillain-Barre and brain inflammation. This vaccine, as in all vaccines, do not prevent the disease, it just makes the disease will be milder. Before this vaccine was made, chicken pox was a "no big deal" deal. Once the vaccine was made the manufacture has made people fear it. Plus if they catch chicken pox, hey guess what, life long immunity, which is far better than, if I get the shot I can still catch it. Any opinions will help. Please do not tell me about the "can’t go to school thing", because, in most states, your child can go to school, because there are laws in place for religious reasons and just because I do not want them to have it.
a. are self-reproducing circular molecules of DNA
b. can transfer between same species bacteria
c. may be transferred between different species of bacteria
d. are self-replicating circular molecules of DNA that can transfer between same species bacteria
e. are self-replicating circular molecules of DNA that can transfer between same species and different species bacteria
In books the DNA is shown to be straight during replication is that true?Because before replication the DNA is shown to be bound to histones and curled up into a chromosome…………
I have to do a project on molecular biology and I chose to compare red blood cells to white blood cells. I have to compare and contrast their DNA and describe what they look like and what important protein they have. PLEASE help! = )
I understand to the point of inserting a foreign gene through plasmid vector into a bacteria such as E.coli. But how do they actually turn these genes into products (transcribe &translate)and how much and how often. Isn`t translation of genes controlled by other parts of DNA or other mechanisms.Lets say we inserted a human enyzme or hormone. Is E.coli gonna say, oh, now that i have this gene, let me keep producing this substance although I don`t need it..?
so, does adding shan-dalgarno and control sequences makes it transcribe this gene on a constant basis?like turning it into a factory? or any external stimula or environmental condition needs to be created to trigger transcription?For example, hormones in humans are synthesized under the control by brain (i think) but in bacteria is it the case that no cell signalling, presence or absence of a substance in the growth media etc required?
Can anybody help me with these questions for a review quiz. I couldnt find the anwers in my book.
1.Which of the following can regulate gene expression in eukaryotes?
A.lac operons
B.transcription factors
C.plasmids
D.lipids
2.Gene expression can occur at several points along the pathway from DNA to RNA to proteins. In one example of gene expression, the protein insulin must be trimmed to a smaller size. How is this is an example of gene expression?
A.Until the protein is trimmed, the shape of the DNA blocks transcription.
B.Until the protein is trimmed, transcription is blocked by a repressor protein.
C.Until the protein is trimmed, it is not useful to the cell.
D.Until the protein is trimmed, the ribosomes are not active.
3.If a cell loses control of gene expression, what happens?
A.The cell becomes more specialized.
B.The cell can carefully use its resources.
C.Healthy, mature cells develop.
D.Abnormal, unhealthy cells develop.
Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to their functional form.
• Describe the movement of proteins from their manufacturing point through this internal membrane system.
• Discuss the role of each of the following structures in the whole process: cell membrane, vesicles (at two points in the process), ribosomes, Golgi apparatus, and endoplasmic reticulum. Be sure to identify the correct order in which the proteins move through each of these structures.
___________________________________________________________________
Please explain so its easy for me to understand….I’m looking at my textbook and cannot figure out how to answer this with the info I have….10 points to correct answer with good description
