Chose the correct answers on one through 15(plese help)
1.A research group hypothesizes that successful infection by HIVdepends upon the expression of FSH3, a human gene. They overexpressthis gene in T cells (Which HIV normally infects) so that FSH3protein levels are very high in these cells. In other T-cells, theymutate FSH3 so that none of its encoded protein is made. They thenmeasure HIV infection rate in the control, overexpression, andmutant T cells. The three cultures are otherwise grown in the sameway.
What is the independent variable(s) in this experiment? (Selectall correct answers)
| | FSH3 protein levels |
| | The medium in which cells are grown |
| | The temperature at which cells are grown |
| | HIV resistance of cells |
Question 2
Which arises from an error in a measurement or observation?
| | Technical variability |
| | Biological variability |
| | Standard error |
| | Standard deviation |
Question 3
Use the following description of an experiment to answer thenext question.
A research group hypothesizes that successful infection by HIVdepends upon the expression of FSH3, a human gene. They overexpressthis gene in T cells (Which HIV normally infects) so that FSH3protein levels are very high in these cells. In other T-cells, theymutate FSH3 so that none of its encoded protein is made. They thenmeasure HIV infection rate in the control, overexpression, andmutant T cells. The three cultures are otherwise grown in the sameway.
What is the control group(s) in this experiment? (Select allcorrect answers)
| | The unaltered T cells |
| | The medium in which cells are grown |
| | The T cells in which FSH3 is mutated |
| | The T cells overexpressing FSH3 |
Question 4
How many of the following statements are true?
I. All papers have an abstract, methods, results, and discussionsection
II. The methods always follows the introduction
Question 5
If scientific convention states that when a P value of less than0.05 is considered significant (in other words, the two groupsbeing measured are actually different), this means that: (Selectall correct answers)
| | If you were to repeat the experiment 100 times, there would notbe a significant difference between the groups in 5 of theexperiments |
| | 95% of all conclusions that state two groups are not differentbased on a 0.5% p-value threshold are false negatives |
| | The groups are actually not different from each other 95% of thetime |
| | 5% of all conclusions that state two groups are different basedon a 0.5% p-value threshold are false positives |
What information is typically found in the introduction sectionof a paper? (Select all that apply)
| | The dependent and independent variables within the study |
| | Which areas of the field are not well understood and whatquestion the study addresses |
| | How the main question of the paper is related to other researchin the field. |
| | How previous work forms the basis for the current study |
| | The purpose of the study |
| | Details of the approaches used |
| | A summary of relevant related studies |
Question 7
How can you judge for yourself whether the conclusions reachedin a paper are valid? (Select all that apply)
| | Read papers of other authors studying the same question or areaof inquiry |
| | Determine if each hypothesis is supported by different types ofevidence/approaches. |
| | Consider closely whether the data actually both addresses andsupports the authorâs hypothesis. |
| | Examine the amount of data in the paper, and how long the paperis. |
| | Whether the authors find a mechanism, or exactly how on variableaffects another. |
| | Interpret the data for yourself without looking the discussion,then compare your interpretations to that of the authorâs. |
Question 8
Where can you usually find the institutional affiliations (wherethey work) of the authors?
| | Within the discussion |
| | In the acknowledgements section |
| | Below the authors list |
| | This is not usually included in papers |
Question 9
Other than publishing primary research articles, what is themain way scientists disseminate their results?
| | Lab meetings |
| | Personal correspondence |
| | Conference seminars |
| | Public lectures |
Question 10
Use the following description of an experiment to answer thenext question.
A research group hypothesizes that successful infection by HIVdepends upon the expression of FSH3, a human gene. They overexpressthis gene in T cells (Which HIV normally infects) so that FSH3protein levels are very high in these cells. In other T-cells, theymutate FSH3 so that none of its encoded protein is made. They thenmeasure HIV infection rate in the control, overexpression, andmutant T cells. The three cultures are otherwise grown in the sameway.
What is the experimental group(s) in this experiment? (Selectall correct answers)
| | Each group is its own control |
| | The T cells overexpressing FSH3 |
| | The T cells in which FSH3 is mutated |
| | The unaltered T cells |