MasteringBiology: Chapter 1 SD How to improve speed, effect Chegg Study Order Co
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MasteringBiology: Chapter 1 SD How to improve speed, effect Chegg Study Order Confirma/X Sarthak × c secure https://session, masteringbiology.com/myct/itemView?assignmentProblemID=106986536&offset-prev; Chapter 1 Building Vocabulary: Key Terms in Science 4 of6 Part A Can you matoh those kay acienco torma wih their dofinitiona? Drag the terms on the lett to the appropriate bianks on the right to complete the sentences Reset Help positive control 1. The type of toat that changes only one variab e at atimo in ordor to isclate the reauits is known cxporiment aingle-blind control group negative control 2. The one vanable that ia manipulated by a soientot aa potendal cau00 in an copenmont l0 tho . The eatablana basa ine for an erp nment. S. A 15group in which no response expected. 6. A s a group in which 8 known response is expecied. 7.in8 treatmen uno does no, to eirmate 8uDjectve bias 8 In a the treaoment and who does noL expernment, the recearchers-but not the paricipants-know who receives the expernment, neither the paticpants nor tne researchers know who receives Submit Provido FoodbackExplanation / Answer
Q Match the key science items with their definations:-
Answer :- Positive control - 6 - A ______ is a group in which a known response is expected.
Explanation:- Positive control is a part of an good experimental design, It receives a treatment with a known response, so that positive response can be compared with the unknown response of the treatment.
Example:- A doctor wants to cure headache and has heard that Aspirin helps in curing headache , so she wants to test how effecctive aspirin is , what she does she takes a group of people having headache and gave Aspirin, but it is seen in some cases headache goes automatically so to prove the effect of aspirin , she takes another group of people having headache and gives them another known medicinewhich cures headache.Now she compares how quickly headache goe away and how many headaches the known drug cured , by this she can compare effect of Aspirin. So positive control gives a scientist a known thing to compare with an unknown thing in a test.
Independent - 2 - The one variable that is manipulated by a scientist as a potential cause in an experiment is the ________ variable .
Explanation:- independent variables are defined as the variables that is changed or controlled in a scientific experiment. It is the reason or cause of an outcome.
Example:- In an experiment to study the effect of temperature on plant pigmentation, the independent variable (cause) is the temperature,and the amount of pigment or color is the dependent variable (the effect).Temperature can be changed to see it's effect on pigmentation.
Single-blind- 7 - In a _____ experiment, the researchers but not the participants knows who receives the treatment , and who does not , to eliminate subject bias.
Explanation:- In single blind experiments the participants are knowingly kept ignorant to which group they belong, but the researcher knows the fact , this is usually done to avoid result bias.
Control group - 4- A _______ establishes a base line for an experiment.
Explanation:- A control group is defined as the group in an experiment or study which is closely related to the tested group, but it does not receive any treatment by the researchers and is used as a benchmark, and is compared with the other tested experimental groups.
Negative control- 5 - A __________ is a group in which no response is expected .
Explanation:- Negative control does not give a response to the treatment, it increases the reliability of the experiment.
Controlled - 1- The type of test that changes only one variable at a time in order to isolate the results is known as _______ experiments .
Explanation :- A controlled experiment is a scientific test done under controlled conditions, here only one varible or factor changes at a time, and all other factors are kept constant.
Dependent- 3 - The _________ variable is the factor a scientist observes to see the effect of the change made.
Explanation:- A dependent variable is a varibale which is measured in an experiment and is affected in the experiment. It depends on independent variable. dependent variable in an experiment is the response, it is measured to see if the treatment had an effect or not.
Example:- whicle studying how stress affects heart rate in humans. Here independent variable is stress and the dependent variable is heart rate. Stress can be directly manipulated and measured in humans,and can be seen how it changes the heart rate.
Double -blind- 8- In a _____ experiment, neither the participant nor the researcher knows who receives the treatment and who does not .
Explanation:- In a double-blind study neither the participants nor the experimenters knows who is receiving a particular treatment. This procedure is used to prevent bias in research results.
A double-blind study is an useful research tool in psychology and other scientific areas.