A pharmaceutical company wanted to test a new drug developed to lessen the effects of the common cold. To test this drug, scientists tested 50 volunteers, each of whom was suffering the effects of a cold. Twenty five of the people were given the drug, while the other 25 were given a placebo, a sugar pill. None of the participants knew who was taking which pill. All participants received a pill at 8:00 am daily for the first three days of the study. All participants lived in the same environment, with the same climate, eating the same diet, and having the same level of activity. The severity of the cold, hence the effectiveness of the pill, was determined by the number of tissues each person used within 24 hours. At the end of a seven day period, it was concluded that those with the sugar pill had their symptoms disappear as well as those who had taken the new wonder drug. The executive committee decided to produce the drug anyway thinking that the public would do anything to relieve the symptoms of a cold. Type of Variable Description Dependent Variable that the researchers actually measurers, counts or observes. It is what the researcher thinks will change in response to the experimental treatment. Independent Variable that is intentionally changed by the researcher. Standardized or Controlled These variables are held constant between each group to help prevent these factors from influencing the dependent variable. Table Source: CA Surmacz (2004) Inquiring Minds Want to know: Introducing Freshmen to Experimental Design. In Tested studies for laboratory teaching. MA O'Donnell, Ed. Vol 25 Mini Workshops. Assoc. Biology Laboratory Education pp. 316-327. 1) State the research question the study aimed to address
2) What is the hypothesis?
3) Identify the independent variable versus the dependent variable.
4) What variables were held constant in this study?
5) What was the control group?
6) What data was collected during the study?
7) What this data qualitative or quantitative?
8) What was the study's conclusion?
Answers
Answer:
1. Research question is a question which is the aim of any experiment or research, in this case, the question addressed by the study is - Testing the effects of a newly developed drug to lessen the effects of the common cold.
2. Hypothesis is an explanation for the reason for any problem it does not need the evidence and completely based on logic.
The newly developed drug is able to lessen the symptoms of a common cold.
3. Independent variable is a variable manipulated or changed during the experiment:
Administration of drug or placebo (sugar pill)
4. Dependent variable is the response to the effect of the independent variable:
Number of tissues for each volunteer
5. Control group is available that remain constant throughout the study or used to compare the results:
Administration of sugar pill to 25 volunteers
6. Data is the result that the study generated -
At the end of the 7 days or one week period, symptoms of common cold disappear in both sets of volunteers who had taken either the drug or the placebo.
7. Data in this study is found is Qualitativedata as the drug is not administrated in doses.
8. Conclusion of the study is that the Placebo effect present as sugar pills relieve the common cold so This drug needs even more analysis.
Related Questions
When natural waters become overloaded with plant nutrients, such as nitrates and phosphates, they become _______________.
One adaption to life in flowing water is what?
Can someone help me i'm stuck on this question.play an important role in an ecosystem, breaking down dead organisms and recycling the nutrients.DecomposersProducersHeterotrophs
biological evolution is the process by which populations of organisms change over time. How could natural selection lead to evolution? Please give a complete anwser. Will mark BRAINLIEST if correct. 100 points!
b. The electron is replaced by electrons generated by the proton gradient.
c. electrons donated directly from plastoquinone at QA.
d. the splitting of water molecules at the manganese center.
e. oxidation of pheophytin. electrons donated from NADPH.
f. electrons transferred from plastocyanin.
Answers
Answer:
A
Explanation:
Answers
Answer:
0.4250 mol MgO
General Formulas and Concepts:
Chemistry - Atomic Structure
- Reading a Periodic Table
- Using Dimensional Analysis
Explanation:
Step 1: Define
17.13 g MgO
Step 2: Identify Conversions
Molar Mass of Mg - 24.31 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of MgO - 24.31 + 16.00 = 40.31 g/mol
Step 3: Convert
= 0.424957 mol MgO
Step 4: Check
We are given 4 sig figs. Follow sig fig rules and round.
0.424957 mol MgO ≈ 0.4250 mol MgO
form 1. A compound 2.an element 3.a molecule
Substances made from two or more different elements are 1.molecules 2.atoms 3.compounds
Answers
Answer:
1 atoms
2 molecule
3 compound
Answers
Answer: Previous long term unrestricted hunting and habitat loss.
Explanation:
Ecosystems are communities of living organisms and non-living and how they relate to their physical environment and other non-living components. Human interactions with an ecosystem can be disruptive, reducing biodiversity- the number of different species of organisms.
War may be a very disruptive human activity. During 15 years of war, the wildlife in Mozambique was hunted for food, and sold as trophies to fund the war. Lions were hunted for sport, or died out after their food sources disappeared.
Biodiversity recovery takes time, however. As communities are reestablished, and lion species reintroduced, the increases in varied species act as food sources for lions to prey upon, lion populations would catch up recovering from unrestricted hunting and habitat loss.
Answers
The stages of replication is Attachment, Penetration and Replication
The following information should be considered:
- A bacteriophage means the virus that attacks bacterial cells.
- The lytic and lysogenic cycles comrpise of two methods of viral replication.
- In the lytic cycle, the virions generated are released from the host cell while on the other hand in the lysogenic cycle, viral nucleic material are existed into host nucleic material and also they are copied to daughter cells at the time when the host cell reproduces.
The common steps in both cycles are given below:
- Attachment – in this step, the bacteriophage attaches itself to the host surface cell to insert its DNA into the host cell.
- Penetration – the virus inserts its DNA into the host cell via penetrating the cell membrane of the host cell.
- Replication – the viral nucleic material is replicated using the host cell's replication mechanism.
Learn more: brainly.com/question/20492533?referrer=searchResults
Answer:
Attachment, Penetration and Replication
Explanation:
A bacteriophage is a virus that attacks bacterial cells. The lytic and lysogenic cycles are two methods of viral replication. In the lytic cycle, the virions produced are released from the host cell whereas in the lysogenic cycle, viral nucleic material are incorporated into host nucleic material and are copied to daughter cells when the host cell reproduces. The common steps in both cycles are given below:
1 Attachment – in this step, the bacteriophage attaches itself to the surface of the host cell so as to insert its DNA into the host cell.
2. Penetration – the virus inserts its DNA into the host cell by penetrating the cell membrane of the host cell.
3. Replication – the viral nucleic material is replicated using the host cell's replication mechanism.
b. insertion mutations can only be silent mutations.
c. insertion mutations can affect many amino acids in the protein.
d. insertion mutations are chromosomal mutations?
Answers
The study of cells is called cell biology. There are two types of a cell on the basis of their number and these are unicellular and multicellular.
The correct answer to the question is option C that is insertion mutations can affect many amino acids in the protein.
What is transcription?
- The conversation or transferring of the gene from DNA to RNA is called transcription.
What is mutation?
- The abnormality in the gene in the DNA sequence which forms a mutated protein is called a mutation.
The formation of protein is called translation. This addition of genes changes the sequence of RNA which alters the protein formation while in point mutation it changes only one amino acid.
Hence, the correct answer is option C.
For more information about the transcription, refer to the link:-