17 Aug Question: Choose The Corrett Aswer(s) On Questions 23-33 Please Help Question 23 Where Is The Central Hypothesis Or Main Question Of A Paper Usually Mentioned? At The End Of The Results At The End Of The Introduction In The Beginning Of The Introduction At The End Of The Discussion Question 24 What Is A Strength(s) Of Correlative Experiments? (Select All Correct …
Choose the corrett aswer(s) on questions 23-33 Please Help
Question 23
Where is the central hypothesis or main question of a paper usually mentioned?
| At the end of the results | ||
| At the end of the introduction | ||
| In the beginning of the introduction | ||
| At the end of the discussion |
Question 24
What is a strength(s) of correlative experiments? (Select all correct answers)
| They can measure multiple variables in a population simultaneously | ||
| They are generally cheaper to carry out | ||
| In certain circumstances, it can be used to infer a causative relationship between variables | ||
| They do not require the approval of a review board | ||
| Observations can be made under more naturally occurring conditions |
Question 25
If you suspect the authors may not be presenting an unbiased interpretation of their data, what sections could you look at to determine their possible viewpoints and objectives? (Select all correct answers)
| Institutional affiliations | ||
| Country of origin | ||
| Abstract | ||
| Funding sources found in the acknowledgement |
Question 26
Which statement accurately compares theories with hypotheses? (Select all that apply)
| A theory is a tentative statement of what scientists think is true | ||
| Theories are more broadly applicable than hypotheses | ||
| Hypotheses generally address broader questions than theories | ||
| Theories are well-established explanations for observations that have been supported with many experiments, while hypothesis are more like educated guesses. | ||
| Hypothesis are revised over time, while theories are not. |
Question 27
Use the following description of an experiment to answer the next question.
A research group hypothesizes that successful infection by HIV depends upon the expression of FSH3, a human gene. They overexpress this gene in T cells (Which HIV normally infects) so that FSH3 protein levels are very high in these cells. In other T-cells, they mutate FSH3 so that none of its encoded protein is made. They then measure HIV infection rate in the control, overexpression, and mutant T cells. The three cultures are otherwise grown in the same way.
What is the controlled variable(s) in this experiment? (Select all correct answers)
| The medium in which cells are grown | ||
| The concentration of HIV virus the cells are infected with | ||
| The temperature at which cells are grown | ||
| FSH3 protein levels | ||
| HIV resistance of cells |
Question 28
When a paper is submitted to a journal, who determines whether a paper is of interest and falls within the scope of a scientific journal?
| Peer reviewers | ||
| The editor of the journal | ||
| The third party referee | ||
| The authors of the paper |
Question 29
Which lab members typically have PhDs? (Select all correct answers)
| Graduate students | ||
| Senior researchers | ||
| Student Interns | ||
| Lab technicians | ||
| Postdocs | ||
| The PI |
Question 30
What are the functions of peer review? (Select all correct answers)
| To evaluate the scientific value and originality of a paper | ||
| To correct errors in data analysis or interpretation | ||
| To maintain high scientific standards in a field of study | ||
| To uncover scientific fraud | ||
| To give authors useful feedback so they may improve their study and/or manuscript |
Question 31
When must scientists get approval from a review board before initiating research? (Select all correct answers)
| When human subjects will be involved in the research | ||
| When human cell lines will be involved in the research | ||
| When vertebrate animals will be involved in the research | ||
| When the research findings will impact human health |
Question 32
In a cancer research experiment, 20 naked mice were irradiated with UV-rays to induce skin cancer. Half of these mice were injected with a drug, and half were mock-injected as controls. The number of tumors after 2 months was counted in both groups. The results are below, and show the mean and standard deviation of both groups.
Assuming the tumor counts are completely accurate, what type of variation do the error bars represent?
| Biological variability | ||
| Replicated variability | ||
| Technical variability | ||
| Organic variability |
Question 33
Pubmed has a number of filters to help you narrow your search. Which of the following are filters you can apply? (Select all correct answers)
| Interview | ||
| Journal Article/Primary Research Article | ||
| Impact factor | ||
| Clinical Trial | ||
| Literature Review |
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