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
0
2
1
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
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
0 | ||
2 | ||
1 |
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 |
