Masteringbiology With Pearson Etext -- Valuepack Access Card -- For Human Biology: Concepts And Current Issues
8th Edition
ISBN: 9780134254906
Author: Johnson
Publisher: PEARSON
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Chapter 1, Problem 4TY
Summary Introduction
Introduction:
In biology, with all the inquisitive things in our surrounding gives us a chance to make an observation. Anything particular, which catches the attention of biologists, is observed and goes through the logical problem-solving method, which is known as scientific method. In this approach, observation is made, questions are asked, and hypothesis formed is tested using different experiments.
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Why is it important to have control experiments in addition to the tests being conducted?
a.To determine if there was unwanted contamination.
b.To determine if experiment yielded an expected result.
c.Neither A or B are correct.
d.Both A and B are correct.
A controlled experiment ________.
A.
includes one group for which the scientist controls all variables
B.
is repeated many times to ensure that the results are accurate
C.
includes at least two groups, one of which does not receive the experimental treatment
D.
includes at least two groups, one differing from the other by two or more variables
I 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 testing
Chapter 1 Solutions
Masteringbiology With Pearson Etext -- Valuepack Access Card -- For Human Biology: Concepts And Current Issues
Ch. 1 - What should medical professionals, politicians, or...Ch. 1 - Will you vaccinate your children? Why or why not?...Ch. 1 - Living things have a different molecular...Ch. 1 - Explain the meaning of the term homeostasis.Ch. 1 - Name four features that together contribute to our...Ch. 1 - Describe the difference between a hypothesis and a...Ch. 1 - Discuss the role of scientists in helping us solve...Ch. 1 - To which of the following domains of life do...Ch. 1 - To which of the following domains do unicellular...Ch. 1 - New scientific knowledge is gained through a...
Ch. 1 - Prob. 4TYCh. 1 -
5. A broad hypothesis that has been supported by...Ch. 1 - Which of the following is used when developing a...Ch. 1 - Prob. 7TYCh. 1 - Consider all of the organisms (human as well as...Ch. 1 -
9. Which of the following lists the steps of the...Ch. 1 - In graphs, which of the following is usually...Ch. 1 - An acceptable scientific hypothesis: a. can be...Ch. 1 - Prob. 12TYCh. 1 - Prob. 13TYCh. 1 - The maintenance of a relatively stable internal...Ch. 1 - All of the following are features that...Ch. 1 - A magician has a coin that he says (hypothesizes)...Ch. 1 - Your roommate is writing a paper on the subject of...Ch. 1 - Prob. 3AWKCh. 1 - Prob. 4AWKCh. 1 -
5. You are trying to convince your friend who...Ch. 1 - Prob. 6AWKCh. 1 - Explain why religious explanations cannot disprove...
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- Define and distinguish between: a. a hypothesis and a scientific theory b. an experimental group and a control grouparrow_forwardA control group is __________. a. a set of individuals that have a certain characteristics or receive a certain treatment b. the standard against which an experimental group is compared c. the experiment that gives conclusive resultsarrow_forwardWhy should the procedures results of an experiment go through peer reviewarrow_forward
- A controlled experiment is one that(A) proceeds slowly enough that a scientist can make carefulrecords of the results.(B) tests experimental and control groups in parallel.(C) is repeated many times to make sure the results are accurate.(D) keeps all variables constant.arrow_forwardA common feature to all scientific experiments is the employment of experimental _____________.arrow_forwardAnswer the question below ;this is a pmma experimentarrow_forward
- Why is it important to always use a large sample size in an experiment? A. To make sure that spontaneous generation is taking place B. To make sure that there are not two variables being tested C. Make sure the data is qualitative D. To compensate for errors and get more accurate dataarrow_forwardFollowing a scientific method, which of the following is the correct order of steps? A) Observation → Analysis → Hypothesis → Conclusion → Communicate results → Experiment B) Observation → Hypothesis → Experiment → Communicate results → Analysis → Conclusion C) Experiment → Hypothesis → Observation → Analysis → Conclusion → Communicate results D) Observation → Hypothesis → Experiment → Analysis → Conclusion → Communicate resultsarrow_forwardThe procedure to test a hypothesis, consisted of a control group and an experimental group isarrow_forward
- The 'control group' is an essential component of an experiment. This is because 1. A control group allows one to determine if a particular result is due to the experimental variable. 2. No, it's not essential in experimentation. A control group is not always necessary it depends on the experiment. 3. A control group allows for multiple variables to be tested at the same time. 4. A control group is required for the development of a prediction.arrow_forwardIdentify the section within a research article where you would expect to find different types of information. 1. The data! 2. A list of prior research articles that helped to inform the current study. 3. The researchers' interpretation of the data. a. Abstract b. Introduction c.Materials and Methods d. Results e.Discussion f.Works Citedarrow_forwardHow is an experiment different from other scientific test such as observational studies or natural experiments?arrow_forward
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