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Designing Controlled Scientific Experiments Quiz

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Designing Controlled Scientific Experiments Quiz

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Questions and Answers

What is the advantage to cells of being very small?

Increased surface area for efficient exchange of materials (correct)

Decreased surface area for less exposure to harmful substances

Enhanced ability to store nutrients

High resistance to external forces

What prefix refers to fluid compartments within the body?

Hyper-

Intra- (correct)

Extra-

Inter-

What is the main function of epithelial tissue?

Contract in response to stimuli

Cover body surfaces and line cavities (correct)

Support and bind different tissues together

Conduct nerve impulses

What is a defining feature of the cell membrane structure?

Presence of a phospholipid bilayer (B) Signup and view all the answers

What process is defined by movement of substances through a concentration gradient without energy input?

Simple diffusion (D) Signup and view all the answers

Which protein types are primarily focused on for their role in transport within the cell membrane?

Transport proteins (B) Signup and view all the answers

What is the purpose of having a control experiment in a scientific investigation?

To provide a baseline for comparison (A) Signup and view all the answers

Which variable is deliberately changed and manipulated by the experimenter?

Independent variable (A) Signup and view all the answers

What is a common reason why experiments may lack validity?

There is researcher bias present (D) Signup and view all the answers

How can reliability in an investigation be improved?

By replicating the experiment multiple times (A) Signup and view all the answers

In scientific investigations, what does an ethical issue typically refer to?

The impact on human test subjects' rights or well-being (B) Signup and view all the answers