Human Biology Custom Edition
11th Edition
ISBN: 9781337631532
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Question
Chapter 1, Problem 7SQ
Summary Introduction
Introduction: Science and scientific hypothesis are testable explanation for a natural phenomenon and testing hypothesis may prove it false. Scientific theories are based on particular objective descriptions of natural world.
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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.
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.
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.
Chapter 1 Solutions
Human Biology Custom Edition
Ch. 1 - You are a living organism. Which characteristics...Ch. 1 - Why is the concept of homeostasis meaningful in...Ch. 1 - What is meant by biological evolution?Ch. 1 - Prob. 4RQCh. 1 - Define and distinguish between: a. a hypothesis...Ch. 1 - Instructions in __________ govern how organisms...Ch. 1 - A _______ is the smallest unit that can live and...Ch. 1 - _______ is a state in which an organisms internal...Ch. 1 - Humans are _________ (animals with backbones);...Ch. 1 - Prob. 5SQ
Ch. 1 - A scientific approach to explaining some aspect of...Ch. 1 - Prob. 7SQCh. 1 - A related set of hypotheses that collectively...Ch. 1 - Which of the following is not a feature of a...Ch. 1 - The diagram below depicts the concept of _______....Ch. 1 - The diagram to the right shows how tiles can be...Ch. 1 - Court witnesses are asked to tell the truth, the...Ch. 1 - Design a test (or series of tests) to support or...Ch. 1 - In a popular magazine article the author reports...Ch. 1 - Researchers studied 393 patients in a hospitals...
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- A 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 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_forwardA 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 variablesarrow_forward
- What are three important thing you will consider when settting up an experiment to investigate a phenomenon? Explain why?arrow_forwardIdeally, an experimental group differs from a control group (a) only with respect to the hypothesis being tested (b) because its subjects are more reliable (c) in that it is less subject to bias (d) in that it is less vulnerable to sampling error (e) only with respect to the variable being studiedarrow_forwardWhich of the following is NOT a reason why scientists use mice and rats to do experiments. A.they have similar physiology B.they have similar anatomy C.they have similar genetics D.they have similar long livesarrow_forward
- a. What was the purpose of the Griffith’s experiment? (What question was asked?) b. Briefly explain the roles of Streptococcus pneumoniae and mice (mouse) in the experimental design. To answer this question, be sure that you address the independent variables.and dependent variables. If you wish, you can sketch a labeled figure to support your answer. c. Write a complete null hypothesis for his experiment.arrow_forwardsuggested and testable explanation for an event is called a _______. a. hypothesis b. variable c. theory d. controlarrow_forwardWhen there is a lot of evidence to support and not sound evidence to disprove an explanation for a phenomenon in science, the idea is elevated to A. explanation B. experimentation C. theoryarrow_forward
- A control group is_______ . a. a set of individuals that have a certain characteristic or receive a certain treatment b. the standard against which an experimental group is compared c. the experiment that gives conclusive resultsarrow_forwardA hypothesis cannot be formed without which of the following? a. experimentation b. observation c. datad. theoryarrow_forwardHow could you make a prediction in Science?arrow_forward
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