FOR THE FOLLOWING STUDIES, WRITE A NULL HYPOTHESIS. -You want to test whether birth control pills increase a woman’s chances of getting breast cancer. -You are interested in discovering if cattle grazing in grasslands alters the plant species that grow in those grasslands. -You want to study whether tomatoes are grown organically (without chemical pesticides and fertilizers) have greater vitamin content than tomatoes grown conventionally (with chemical pesticides and fertilizers).

FOR THE FOLLOWING STUDIES, WRITE A NULL HYPOTHESIS. -You want to test whether birth control pills increase a woman’s chances of getting breast cancer. -You are interested in discovering if cattle grazing in grasslands alters the plant species that grow in those grasslands. -You want to study whether tomatoes are grown organically (without chemical pesticides and fertilizers) have greater vitamin content than tomatoes grown conventionally (with chemical pesticides and fertilizers).

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter1: The Study Of Life

Section: Chapter Questions

Problem 1VCQ: Figure 1.6 In the example below, the scientific method is used to solve an everyday problem. Order...

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A person notices that her houseplants that are regularly exposed to music seem to grow more quickly than those in rooms with no music. As a result, she determines that plants grow better when exposed to music. This example most closely resembles which type of reasoning? inductive reasoning deductive reasoning neither, because no hypothesis was made both inductive and deductive reasoning
Figure 1.6 In the example below, the scientific method is used to solve an everyday problem. Order the scientific method steps (numbered items) with the process of solving the everyday problem (lettered items). Based on the results of the experiment, is the hypothesis correct? If it is incorrect, propose some alternative hypotheses. Observation Question Hypothesis (answer) Prediction Experiment Result There is something wrong with the electrical outlet. If something is wrong with the outlet, my coffeemaker also won’t work when plugged into it. My toaster doesn’t toast my bread. I plug my coffee maker into the outlet. My coffeemaker works. Why doesn't my toaster work?
Figure 1.18 In the example below, the scientific method is used to solve an everyday problem. Which part in the example below is the hypothesis? Which is the prediction? Based on the results of the experiment, is the hypothesis supported? If it is not supported, propose some alternative hypotheses.1. My toaster doesn’t toast my bread.2. Why doesn’t my toaster work?3. There is something wrong with the electrical outlet.4. If something is wrong with the outlet, my coffeemaker also won’t work when plugged into it.5. I plug my coffeemaker into the outlet.6. My coffeemaker works.
Observation: Students on a university campus notice that the freshly squeezed mango juice ferments faster than the freshly made lime juice even though they are made by the same vendor, using the same method of juice extraction, and kept at the same temperature. Write a simple hypothesis, null hypothesis and alternative hypothesis
A person notices that her houseplants that are regularly exposed to music seem to grow more quickly than those in rooms with no music. As a result, she determines that plants grow better when exposed to music. This example most closely resembles which type of reasoning? Choose the correct answer. a. deductive reasoning b. inductive reasoning c. neither, because no hypothesis was made d. both inductive and deductive reasoning
Question 2) : You observe a species ingesting a plant that has some medical benefits. What simple experiment could you do to find out if that behavior is a genetically determined biological adaptation or a medical practice? (hint: your answer should also contain what the difference between the two is)
The purpose of making observations is to lead someone to ask a question about how or why or when something occurs in the natural world. This, in turn, stimulates the formation of possible explanations, termed hypotheses, that can be tested by collecting data from a study or an experiment. Advocates for organic farming claim that their methods result in a number of benefits to farmers, consumers, and the environment. A group of scientists is conducting a study on the benefits of organic farming. What should be the final product of the observational stage of their study?
Diet and Thyroid Iodine is an important micronutrient involved in thyroxine production. Without adequate iodine present in the diet, a thyroid dysfunction called a goitre may occur. A hypothesis is a proposed statement or a prediction that explains a phenomenon. In other words, it describes what you think will happen in an experiment and offers a starting point that requires further investigation. Page 122 of your Biology textbook states that "A hypothesis is a statement that provides one possible answer to a question, or one possible explanation for an observation." Hypotheses are based on previous knowledge or evidence and are tested in a variety of ways, including experiments and observations. Iodine is the element necessary for the synthesis of thyroxine. In your own words, write a hypothesis about how an excess of iodine in the diet may or may not affect the amount of thyroxine produced by an individual (think about the negative feedback loop that regulates thyroxine…
The scientific method is the process that scientists use to find out new information. It involves a question, a hypothesis, a prediction, collecting data, and analyzing that data to make a conclusion. How would you use the scientific method to answer this question: Do mice live longer when they are fed high-sugar diets?
Located below is a list of examples of hypotheses. You must critique each hypothesis and assess if it is testable and written properly. Otherwise, revise the statement and make it a good one. 1. If Fertilizer X is applied to mung bean plants, then they will have a higher yield. 2. Increasing the temperature allows faster bacterial growth on an agar medium. 3. The pH of the solution will decrease. 4. If the salary of employees will increase, then employees will be happier. 5. The students got higher scores in the exam because the class size is small. 6. A farmer observed that during seasons of drought and soil becomes more saline, his tomato plants were more susceptible to fungal infection. The combination of salinity and drought and the infestation of fungi led to significant reductions in fruit yield and size. The farmer proposes a general hypothesis, “Salinity and drought affect the severity of fungal infection in tomato plants.”
Write a hypothesis that answers our scientific question: How does the solution change the volume of an egg cell? Be sure to be specific about the parts of the experiment. Include the variables in your response. How does the concentration of the syrup solution change the volume of an egg cell? Use this sentence starter for a guide: If the [independent variable] [increases/decreases] then the [dependent variable] will [increase, decrease, stay the same] because [insert what you think you understand about biology].
Scenario: Natural selection is a process by which organisms with favorable traits produce more successful offspring than organisms with less favorable traits, causing the favorable traits to become more common in the population. In the southern United States, two different tree frog species, green tree frogs and gray tree frogs, are an example of this. They both live in some of the same parts of the country and eat the same things. They both also live off of the ground and lay eggs in water. Can you write a scientific explanation that explains why the tree frog species are different colors? Claim: Evidence: Reasoning: