Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 1, Problem 4TYU
Summary Introduction
Introduction: In controlled experiments, one variable is manipulated to test its effect, while keeping the other potential confounding factors constant.
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Students have asked these similar questions
The _______ is manipulated by scientists over the course of an experiment.
A.)dependent • variable
B.)data
C.)independent variable
A well-designed experiment will contain both positive and negative controls. Which of the following is a false statement?
Choose one from the following:
(A) a positive control experiment is missing some of the components of the experiment and should give a negative result
(B) a positive control experiment contains all of the components of an experiment and should give a positive result
(C) a negative control experiment is missing the element being tested and should give a negative result
(D) if there are multiple components of an experiment, there should be multiple negative controls
(E) if a negative control experiment give positives results, it is likely that the experiment is contaminated
A controlled experiment is one that
proceeds slowly enough that a scientist can make careful records of the results.
tests experimental and control groups in parallel.
is repeated many times to make sure the results are accurate.
keeps all variables constant.
Chapter 1 Solutions
Campbell Biology
Ch. 1.1 - Starting with the molecular level in Figure 1.3,...Ch. 1.1 - Identify the theme or themes exemplified by (a)...Ch. 1.1 - WHAT IF? For each theme discussed in this...Ch. 1.2 - Explain why "editing" is a metaphor for how...Ch. 1.2 - Referring to Figure 1.20, provide a possible...Ch. 1.2 - DRAW IT The three domains you learned about in...Ch. 1.3 - What qualitative Observation led to the...Ch. 1.3 - Contrast inductive reasoning with deductive...Ch. 1.3 - Why is natural selection called a theory?Ch. 1.3 - WHAT IF? In the deserts of New Mexico, the soils...
Ch. 1.4 - How does science differ from technology?Ch. 1.4 - MAKE CONNECTIONS The gene that causes sickle-cell...Ch. 1 - Prob. 1.1CRCh. 1 - How could natural selection have led to the...Ch. 1 - What are the roles of gathering and interpreting...Ch. 1 - Explain why different approaches and diverse...Ch. 1 - Prob. 1TYUCh. 1 - Prob. 2TYUCh. 1 - Which of the following best demonstrates the unity...Ch. 1 - Prob. 4TYUCh. 1 - Which of the following statements best...Ch. 1 - Which of the following is an example of...Ch. 1 - Prob. 7TYUCh. 1 - Prob. 8TYUCh. 1 - Prob. 9TYUCh. 1 - SCIENTIFIC INQUIRY Based an the results of the...Ch. 1 - WRITE ABOUT A THEME: EVOLUTION In a Short essay...Ch. 1 - SYNTHESIZE YOUR KNOWLEDGE Can you pick out the...
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- 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.arrow_forwardWhat is the difference between a panel and an experiment?arrow_forward1) In the scientific method, the process of observation leads to the formation of a .............. which is a viable explanation for the observations. a) controlled variable b) experiment c) theory d) hypothesisarrow_forward
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- (a) what are the advantages of using computer simulations over tangible models? (b) what are the disadvantages?arrow_forwardwhat is a controlled experiment?arrow_forwardExplain the following (I) Nature of science (ii) History of science (iii) philosophy of science (iV) science as products (V) science as processarrow_forward
- Which of the following is a necessary characteristic of the process of science: a) studies are designed to prove a hypothesis of interest b) these are ALL necessary characteristics c) studies are exclusively manipulative, never observational d) predictions are inductively derived from the hypothesis of interest e) only materialistic hypotheses are consideredarrow_forwardWhich of the following are characteristics of scientific theories? (select all that are correct) a) An guess at how the world works b) An hypothesis that has been supported across many experiments c) An untested idea d) An expert's opinion e) A testable idea about how the world works that is supported by objective data from multiple sources. f) An hypothesis that has been supported by some research but not supported by other research.arrow_forwardwhat is the difference between a quasi-experimental design and an experimental designarrow_forward
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