In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals the heat gained by the water and the two end up at the same temperature.In one experiment, the mass of the metal block is 75.0 grams, the volume of water used is 74.6 mL, the temperature of the cold water extrapolated to the time of mixing is 17.5oC, and the temperature of the metal block and water extrapolated back to the time of mixing is 28.2oC

DNA Function Quiz Schedule: Available now.Due 02/15/2015 11:59 PM EST Question 1 Select one answer. Show more DNA Function Quiz Schedule: Available now.Due 02/15/2015 11:59 PM EST Question 1 Select one answer. 10 points A typical PCR cycle consists of steps at different temperatures typically 55 78 and 98 oC. The correct order of these steps is? 78 98 55 98 78 55 78 55 98 98 55 78 55 78 98 55 98 78 Question 2 Select one answer. 10 points During DNA replication it is possible for the T residue in the template strand to form two hydrogen bonds with a T base on the new strand. This doesnt normally occur because: DNA polymerase cannot incorporate T into the newly synthesized strands. The T-T basepair contains two of the smaller sized bases. The normal A-T base pairing uses 3 hydrogen bonds so it will be preferred. The two T-T hydrogen bonds will be weaker than the two hydrogen bonds between an A-T pair. Question 3 Select one answer. 10 points What process is responsible creating distinct sets of proteins in skin cell compared to brain cell? DNA Replication DNA Mutation Base Titration Gene Expression Question 4 Select one answer. 10 points Which part of the nucleotide stores the genetic information? Phosphate group Nitrogen base Deoxyribose Ribose Question 5 Select one answer. 10 points Which of the following statements is FALSE? Both DNA replication and PCR use DNA polymerase. Both DNA replication and PCR use primers. Both DNA replication and PCR use a DNA template. Both DNA replication and PCR use helicase. Question 6 Select one answer. 10 points If radioactive nucleotide bases were provided to bacteria during DNA synthesis then after cell division you would find: Both bacteria would be equally radioactive. Neither would be radioactive because DNA polymerase can distinguish between isotopes. One bacteria would be radioactive and the other not. Question 7 Select all that apply. 10 points In which of the following organisms is it necessary to transport the mRNA across a membrane prior to protein synthesis. Select all that apply. Animals Plants Bacteria Viruses Question 8 Select one answer. 10 points What is the end result of DNA replication? Two DNA molecules one with two old strands and one with two new strands. Two DNA molecules which each have two new strands and two old strands. Two DNA molecules which each have one old strand and one new strand. Two DNA molecules each both have two new strands. Question 9 Select one answer. 10 points Does the DNA in the skin cell have the same sequence of bases as the DNA in the brain cell of the same organism? Yes the sequence of ALL DNA is the same. No some cells will have moms DNA other cells will have dads DNA. No the DNA sequence will vary based on cell type. Yes the sequence of bases should be the same in all cells of an organism. Question 10 Select one answer. 10 points Skin cells perform very different functions compared to brain cells. On the molecular level what makes skin cells different from brain cells in the same organism? Proteins DNA ATP pH Show less

 

Infection with the human immunodeficiency virus (HIV) is routinely diagnosed by detecting the presen Show more Infection with the human immunodeficiency virus (HIV) is routinely diagnosed by detecting the presence of specific antibodies in the patients serum. Although the presence of the virus itself can be now be detected these tests remain expensive and require laboratory techniques that are not routinely available. The diagnosis of HIV infection begins with an enzyme immunoassay (EIA). The optical density (OD) of the patients EIA is compared to a control specimen (OD ratio). If the OD ratio is above the established cutoff for that control sample on repeat testing the specimen is termed repeatedly reactive. The EIA is relatively sensitive fast simple and inexpensive which makes it an appropriate screening test. However if one examines the ODs for a large group of samples from patients with and without true HIV infection you can see that there is some overlap in their EIA results if a value of A is used for the cutoff: Hypothetical distribution of OD ratios for patients with and without HIV infection. Patients with HIV infection are depicted with the BLUE thick line and the patients without HIV are depicted with a thin RED line. 1. What would be the impact of moving the cut-off line from A to B on sensitivity and specificity? 2. What would be the impact of moving the cut-off line from A to C on sensitivity and specificity? 3. Where would you suggest setting the cut-off? 4. If you are the director of a blood bank and having HIV-negative blood is vital where would you set the cut-off and why? 5. If you are the director of an investigational drug for HIV-positive patients which decrease viral load and protect T cells BUT have significant side-effects where would you set the cut-off and why? Show less

 

human immunodeficiency virus (HIV)Infection with the human immunodeficiency virus (HIV) is routinely diagnosed by detecting the presence of specific antibodies in the patients serum. Although the presence of the virus itself can be now be detected (i.e. polymerase chain reaction [PCR] to measure plasma HIV RNA or viral load) these tests remain expensive and require laboratory techniques that are not routinely available. The diagnosis of HIV infection begins with an enzyme immunoassay (EIA). The optical density (OD) of the patients EIA is compared to a control specimen (OD ratio). If the OD ratio is above the established cutoff for that control sample on repeat testing the specimen is termed repeatedly reactive. The EIA is relatively sensitive fast simple and inexpensive which makes it an appropriate screening test. However if one examines the ODs for a large group of samples from patients with and without true HIV infection you can see that there is some overlap in their EIA results if a value of A is used for the cutoff:Hypothetical distribution of OD ratios for patients with and without HIV infection.Hypothetical distribution of OD ratios for patients with and without HIV infection.Patients with HIV infection are depicted with blue thick linethose without HlV with red thin line.Where a cutoff is drawn to determine a diagnostic test result may be somewhat arbitrary.Your TaskAnswer these questions:1. What would be the impact on this tests sensitivity if you moved the cutoff for a positive result from A to B? What about specificity? What would happen to sensitivity and specificity if you moved the cutoff from A to C? Where would you put the cutoff for this test? What is the relationship between sensitivity and specificity for any given test?2. Where would the director of the Blood Bank who is screening donated blood for HIV antibody want to put the cutoff? What would be the potential problem caused by this decision? Where would an investigator enrolling high-risk patients in a clinical trial for an experimental potentially toxic antiretroviral draw the cutoff? What would be the potential problem caused by this decision? In your answer please detail possible ethical and legal issues of possible concern.

 

For this essay my chosen medication is omeprazole kindly use this antibiotic medication for this essay. thanks.The word limit is 3000 words.Use the school reference guide which is based on the American Psychological Association (APA) referencing style Protect the identity of the patient/client/placement.1. Demonstrate knowledge and application of the safe ordering receiving storage and disposal of medicines.2. Demonstrate understanding and knowledge of the principles of supply and administration via a Patient Group Direction (PGD).3. Explain how legal and ethical frameworks underpin safe and effective medicines management and administration.4. Explain and discuss the advantages and disadvantages of working in partnership with patient/clients and carers in relation to self-administration and management of medicines.5 Demonstrate knowledge and understanding of the fundamental principles of pharmacology in nursing practice.Learning outcome 1Demonstrate knowledge and application of the safe ordering receiving storage and disposal of medicines. Discuss here the relevant issues in terms of the ordering receiving storage and disposal of the medication. Underpin this with any relevant legislation and policy that guides nurses with this process.Learning outcome 2Demonstrate understanding and knowledge of the principles of supply and administration via a Patient Group Direction (PGD). Here you can discuss the principles of the above. Not all of your chosen drugs will be on a PGD. For the purposes of your essay include a discussion referencing the most up to date literature surround the administration of medications via a PGDLearning outcome 3Explain how legal and ethical frameworks underpin safe and effective medicines management and administration. To meet this learning outcome you should include a thorough explanation of the legal and ethical frameworks that operate in the arena of safe and effective medicines management. Relate this to the medication that you have chosen to use for this assignment.Learning outcome 4Explain and discuss the advantages and disadvantages of working in partnership with patient/clients and carers in relation to self-administration and management of medicines. This should relate directly to the medication that you have chosen. Think about the issues around self-administration of drugs and discuss this from the view of a service user/carer/patient.Learning outcome 5Demonstrate knowledge and understanding of the fundamental principles of pharmacology in nursing practice. For this learning outcome relate your discussion to the medication selected. Discuss the relevant pharmacology of this drug in terms of the fundamental principles of pharmacology. For example consider the relevant pharmacokinetics and pharmacodynamics of the drug and other key pharmacological processes like absorption excretion bio-transformation and distribution.