17 Aug Question: Chose The Correct Answers On One Through 15(plese Help) 1.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 …
Chose the correct answers on one through 15(plese help)
1.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 independent variable(s) in this experiment? (Select all 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 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 control group(s) in this experiment? (Select all correct 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 discussion section
II. The methods always follows the introduction
| 0 | ||
| 2 | ||
| 1 |
Question 5
If scientific convention states that when a P value of less than 0.05 is considered significant (in other words, the two groups being measured are actually different), this means that: (Select all correct answers)
| If you were to repeat the experiment 100 times, there would not be a significant difference between the groups in 5 of the experiments | ||
| 95% of all conclusions that state two groups are not different based on a 0.5% p-value threshold are false negatives | ||
| The groups are actually not different from each other 95% of the time | ||
| 5% of all conclusions that state two groups are different based on a 0.5% p-value threshold are false positives |
What information is typically found in the introduction section of a paper? (Select all that apply)
| The dependent and independent variables within the study | ||
| Which areas of the field are not well understood and what question the study addresses | ||
| How the main question of the paper is related to other research in 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 reached in a paper are valid? (Select all that apply)
| Read papers of other authors studying the same question or area of inquiry | ||
| Determine if each hypothesis is supported by different types of evidence/approaches. | ||
| Consider closely whether the data actually both addresses and supports the author’s hypothesis. | ||
| Examine the amount of data in the paper, and how long the paper is. | ||
| Whether the authors find a mechanism, or exactly how on variable affects another. | ||
| Interpret the data for yourself without looking the discussion, then compare your interpretations to that of the author’s. |
Question 8
Where can you usually find the institutional affiliations (where they 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 the main way scientists disseminate their results?
| Lab meetings | ||
| Personal correspondence | ||
| Conference seminars | ||
| Public lectures |
Question 10
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 experimental group(s) in this experiment? (Select all 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 |
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