What is the transport of substances across a plasma membrane with transmembrane proteins from high to low concentration without any energy usage called?
Understand the Problem
The question describes a biological process where substances move across a cell membrane through transmembrane proteins, following the concentration gradient (from high to low concentration), and without requiring energy input. The question asks you to identify the name of this transport process.
Answer
Facilitated transport, also known as facilitated diffusion.
The transport of substances across a plasma membrane with transmembrane proteins from high to low concentration without any energy usage is called facilitated transport, also known as facilitated diffusion.
Answer for screen readers
The transport of substances across a plasma membrane with transmembrane proteins from high to low concentration without any energy usage is called facilitated transport, also known as facilitated diffusion.
More Information
Facilitated transport is a type of passive transport, meaning it doesn't require energy. It relies on transmembrane proteins to help substances cross the cell membrane down their concentration gradient.
Tips
A common mistake is confusing facilitated transport with active transport, which requires energy. Also, remember that facilitated transport always moves substances down their concentration gradient (from high to low concentration).
Sources
- 3.5: Passive Transport - Biology LibreTexts - bio.libretexts.org
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