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After hearing the statement "No Cell Phones Allowed" in several of your classes over the last couple semesters, you begin to wonder if they have an impact on a student's performance in a class or if your teachers are just out of touch with today's world and are technophobes. You are given permission to conduct a study by observing a large lecture class of 120 students. You record the students' behavior for a month and document the amount of time each student is using their cell phone during class. At the end of the month, the students are given an exam on the material covered in that time period to evaluate their understanding of the material.
1. What is the question investigated in this experiment?
2. What would be the hypothesis tested? 3. What is the independent variable in this experiment?
4. What is the dependent variable in this experiment?
5. Explain what results would support your hypothesis.
6. Describe how you could create a control group for this experiment.
7. Other than a control, describe 2 ways you could improve the accuracy of the data obtained from this experiment and explain how they would improve the quality of your experiment.
What happens when Rho is over-expressed in cells?
q1. on an autosome genes a and b are 10 map units apart. on the autosome genes c and d are 20 map units apart. an
The light-independent reactions of plants function to make organic molecules using carbon dioxide as a carbon source. What is the electron source that helps reduce carbon dioxide to sugars and other organic molecules?
What is the importance of membranes in the body? What are the three types of membranes? Compare and contrast each type. What homeostatic imbalances may occur relating to membranes, and what are their implications?
Compute the minimum length nucleotide sequence you need before you can expect a match to either strand to be unique, under the naïve assumption.
organ, tissuesystem and cell, you should be able to cite an example where increasing the s/v ratio has potentially increased the rate of exchange of materials
Having learned an optimum sugar concentration, students next decide to investigate whether different strands of yeast ferment glucose to produce different amounts of alcohol. In brief explain how this experiment would be set up.
In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+ thr+ and used to transduce a recipient of genotype cys- leu- thr-.
Use the momentum balance method and derive the flow rate of a Newtonian fluid flowing across a cylindrical tube driven under pressure of rate change if the tube diameter decreases by half?
What are the two major hypotheses for the evolutionary history of introns in prokaryotes and eukaryotes? What is the evidence supporting each of these possibilities? What kind of additional evidence, if available, could help resolve this debate.
You have done research into healthy food and have discovered that once upon a time many of our fruits and vegetables were originally purple.
Explain why do diuretics produce less diuresis than the loop diuretics and why would thiazide diuretic be chosen over the others for the treatment of hypertension?
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