Scenario 1- Mayfly Metabolism Energy is required by all living organisms in orde
ID: 3165619 • Letter: S
Question
Scenario 1- Mayfly Metabolism Energy is required by all living organisms in order to su yeast will utilize carbohydrates, such as glucose or sucrose as an energy source stain cellular reactions. We know that group of students were interested in studying whether ingestion of carbohydrates would alter regenerate ATP. The byproduct of respiration is carbon dioxide (COJ). Yeast were given 20mL of water, glucose, or sucrose for 24 hours. The students then quantified metabolic activity by measuring the amount of CO2 (in ppm) produced by each yeast treatment during a 30 minute period. the metabolic activity of yeast. Aerobic respiration uses oxygen (O2) and glucose to 1. What is the independent variable? Is this variable categorical or quantitative? 2. What is the dependent variable? Is this variable categorical or quantitative? 3. What is a reasonable hypothesis for this study? 4. What is logical prediction, given the study and the hypothesis you developed? 5. Is this study an observational study or an experiment?Explanation / Answer
Answer 5. This study is an experiment. In an experiment, we get an important conclusion at the end and here also after providing a set of ingredients regularly to the yeast, we will see how it's carbon dioxide production varies after every 30 minutes. It seems the usage of scientific procedure to test the hypothesis.
Answer 6. Initially, the sample size of yeast was small as we began in the starting but after each 30 minutes the sample size of yeast will increase because carbohydrate source will provide as a medium to yeast and will go continuous budding too to increase its number.
The exact sample size of yeast can be estimated by the hemocytometer or flow cytometry analysis.
Answer 7. Confounding variable is a variable from the extraneous source that changes the effect of independent and dependent variable.
The 4 potentially confounding variables that the students controlled are:
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