11 Questions
What is the advantage to cells of being very small?
Increased surface area for efficient exchange of materials
What prefix refers to fluid compartments within the body?
Intra-
What is the main function of epithelial tissue?
Cover body surfaces and line cavities
What is a defining feature of the cell membrane structure?
Presence of a phospholipid bilayer
What process is defined by movement of substances through a concentration gradient without energy input?
Simple diffusion
Which protein types are primarily focused on for their role in transport within the cell membrane?
Transport proteins
What is the purpose of having a control experiment in a scientific investigation?
To provide a baseline for comparison
Which variable is deliberately changed and manipulated by the experimenter?
Independent variable
What is a common reason why experiments may lack validity?
There is researcher bias present
How can reliability in an investigation be improved?
By replicating the experiment multiple times
In scientific investigations, what does an ethical issue typically refer to?
The impact on human test subjects' rights or well-being
Test your knowledge on designing, conducting, and evaluating controlled scientific experiments. Learn about hypotheses, independent and dependent variables, and the purpose of control experiments.
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