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Biology Chapter 5 Quiz: Scientific Method & Enzymes

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Biology Chapter 5 Quiz: Scientific Method & Enzymes

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Questions and Answers

What is the first step in the scientific method?

Conclusion

Research

Hypothesis

Observation (correct)

What characterizes an effective hypothesis in experimental design?

It needs to involve multiple variables.

It must be testable and falsifiable. (correct)

It must be untestable.

It should be overly complex.

Which method uses specific examples to formulate a general theory?

Analogical reasoning

Contradictory reasoning

Inductive reasoning (correct)

Deductive reasoning

What type of group receives no manipulation during an experiment?

Control group Signup and view all the answers

What is denaturation in the context of enzymes?

The alteration of an enzyme's molecular structure Signup and view all the answers

Which carbohydrate test is used to detect smaller sugars?

Benedict's Test Signup and view all the answers

What is the term for a number that appears most frequently in a data set?

Mode Signup and view all the answers

What is the role of an emulsifier in a mixture?

To stabilize and allow mixing of liquids Signup and view all the answers

What is the main function of an inhibitor in enzyme activity?

To prevent the enzyme from acting on the substrate Signup and view all the answers

Which type of inhibitor physically blocks the enzyme's active site?

Competitive inhibitor Signup and view all the answers

What is the role of a spectrophotometer in a lab setting?

To measure light absorbance Signup and view all the answers

How does temperature generally affect enzyme activity?

Denatures the enzyme and slows the reaction Signup and view all the answers

What occurs to cells in a hypertonic solution?

Cells lose water and may shrivel (crenate) Signup and view all the answers

What process describes the movement of water through a semi-permeable membrane?

Osmosis Signup and view all the answers

What occurs during plasmolysis?

Water moves out of the cell Signup and view all the answers

What defines Brownian motion?

Random movement of particles due to kinetic energy Signup and view all the answers