Campbell Biology: Concepts & Connections (9th Edition)
9th Edition
ISBN: 9780134296012
Author: Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan, Jane B. Reece
Publisher: PEARSON
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Chapter 12, Problem 16TYK
SCIENTIFIC THINKING Scientists investigate hypotheses using a variety of methods, depending on the circumstances behind the research. Human nutrition studies (such as those studying whether GMO foods have any health effects) are particularly problematic. Can you design a hypothetical human nutrition study to test whether GMO corn is less healthy than traditional corn? Can you identify real-world problems that may interfere with your design and confound your results?
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Students have asked these similar questions
a) Does the data support your hypothesis?
b) How could you improve this experiment? Consider the other factors you could have / should have controlled in this experiment.
Dr. Vanier’s daughter Lexy thinks that the snacking habit alone does not cause weight loss. She believes that one needs to combine no snacking with the elimination of carbohydrates in their meals.
Please explain how Dr. Vanier may test this hypothesis by describing the research design.
Specify the independent variable(s), dependent variable(s), and the name of the design.
Finally, describe what she needs to find (i.e., what type of effect and what it looks like) in the experiment to support her hypothesis.
( name the IV(s); 1name the DV(s); name the design; then explain the effect that will support the hypothesis)
A team of researchers is interested in testing the amount of oxygen gas (O2) produced when the same species of plant is exposed to different colors of visible light. The research team has developed a hypothesis to test and designed experimental conditions to run.
They have submitted the work to you for feedback and approval. Your job is to provide feedback concerning both the hypothesis and the experimental design. This will enable them to make the necessary changes to obtain approval for their research.
The Team’s Hypothesis:
The levels of oxygen gas will be higher for plants exposed to visible red light.
How would you improve the hypothesis while also putting it into a proper hypothesis with an IF and THEN statement?
Chapter 12 Solutions
Campbell Biology: Concepts & Connections (9th Edition)
Ch. 12 - Imagine you have found a small quantity of DNA....Ch. 12 - Which of the following would be considered a...Ch. 12 - The DNA profiles used as evidence in a murder...Ch. 12 - A paleontologist has recovered a tiny bit of...Ch. 12 - How many genes are there in a human sperm cell? a....Ch. 12 - When a typical restriction enzyme cuts a DNA...Ch. 12 - Why does DNA profiling rely on comparing specific...Ch. 12 - Recombinant DNA techniques are used to...Ch. 12 - A biochemist hopes to find a gene in human cells...Ch. 12 - A biologist isolated a gene from a human cell,...
Ch. 12 - Explain how you might engineer E. coli to produce...Ch. 12 - What is left for genetic researchers to do now...Ch. 12 - Today, it is fairly easy to make transgenic plants...Ch. 12 - In the not-too-distant future, gene therapy may be...Ch. 12 - The possibility of extensive genetic testing...Ch. 12 - SCIENTIFIC THINKING Scientists investigate...
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- Taylor deiced to start her own a piggery in their province. She wanted to know what should be the best food for the pigs to become heavier. She considered natural foods or synthetic foods. Utilize the scientific method to solve the problem of Taylor. Problem: Questions : Hypothesis: Steps in the Experiment: Present and Analyze the Data (tabular form): Draw conclusion:arrow_forwardI answered with a and c but keep getting told its the wrong answer. Which of the following is not a component of effective experimental designs in the early stages of a scientific study? Select one or more: a. small sample sizes b. experimental groups taking a placebo c. double blind experiments d. short duration e. animal models f. repetitive testingarrow_forward1. What is the problem in this activity? 2. Formulate your hypothesis. (List down at least 3 hypotheses) 3. What is the dependent variable? 4. What is the independent variable? 5.Analyze your results. Which type of liquid will prevent the apple from turning brown?arrow_forward
- Identify each statement below as S if it can be tested scientifically or N if it is non-empirical knowledge. Explain your answer. a. Four out of every five doctors recommend Crest toothpaste. b. People born between July 23 and August 22 should be concerned about things going wrong today. g. Fetal tissue transplanted into the brains of patients with Parkinson’s disease causes improvement in brain function in these patients. c. It is unethical to use fetal tissue to treat Parkinson’s patients. d. Tylenol is a better pain reliever than aspirinarrow_forwardIs it possible to consume non-GMO wheat, corn, canola, soy, sugar, or papaya in Canada? Choose one of the listed food items and discuss the impact of biotechnological research on its current availability in our country.arrow_forwardGMOs are highly controversial. Are GMOs dangerous? Should GMOs be labeled as such? Why, or why not? Discuss, using philosophers and philosophies discussed.arrow_forward
- When presenting a slide that shows experimental data you should explain the experiment that gave that data you should discuss the hypothesis being tested O you should discuss whether or not the results support or refute the hypothesis all of the abovearrow_forwardA. Define null hypothesis in your own words. B. What is thr poiny of having a null hypothesis? C. What is the alternative hypothesis? D. Why do we need to test the null hypothesis instead of just proving an alternative hypothesis? F. You are t. Esting the effect of a particular fertilizer onba plant's growth. Your control plants don't get fertilizer while your test plants do. Whatvwould be your hypotheses and the null hypotheses?arrow_forwardStatement 1: Biochemistry as a basic science in the field of agriculture studies the chemical compositions and reactions involved in the production, protection, and use of crops and livestock. Statement 2: Its applied science and technology aspects are directed toward control of those processes to increase yields, improve quality, and reduce costs. A. Only the first given statement is true. B. Both the given statements are true. C. Only the second given statement is true. D. Both the given statements are false.arrow_forward
- Why do scientists develop a hypothesis before conducting research?arrow_forwardHere are some examples of real research topics.For each one, can you name the unit of analysis?(The answers are at the end of this chapter.)a. Women watch TV more than men becausethey are likely to work fewer hours outsidethe home than men. . . . Black people watchan average of approximately three-quartersof an hour more television per day thanwhite people. (Hughes 1980: 290)arrow_forwardThe hypothetico-deductive method in science includes all of the following components except: logical deduction (from a universal rule to particular predictions), as emphasized by Aristotle designing a critical test for the hypothesis, as exemplified by Galileo’s test of falling objects unquestioning acceptance of Aristotle’s authority, as practiced by late medieval scholastics continuous testing of the hypothesis by further inquiry, as emphasized by Socrates logical induction (from particulars to universals), as emphasized by Platoarrow_forward
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