Question

Which statement about ion channels is not true? a. They form pores in the membrane. $b .$ They are proteins. $c .$ All ions pass through the same type of channel. dovement through them is from regions of high concentration to regions of low concentration. $e .$ Movement through them is by simple diffusion.

Name: Problem 7, Chapter 6: Life: The Science of Biology
Uploaded: 2021-04-13T22:09:56-08:00
Duration: 1 min 36 s
Channel: Christina Sorrentino
Description: Which statement about ion channels is not true? a. They form pores in the membrane. b . They are proteins. c . All ions pass through the same type of channel. dovement through them is from regions of high concentration to regions of low concentration. e . Movement through them is by simple diffusion.

   Which statement about ion channels is not true?
a. They form pores in the membrane.
$b .$ They are proteins.
$c .$ All ions pass through the same type of channel.
dovement through them is from regions of high concentration to regions of low concentration.
$e .$ Movement through them is by simple diffusion.

Life: The Science of Biology

David E. Sadava,… 9th Edition

Chapter 6, Problem 7

Instant Answer

Solved by Expert Christina Sorrentino

04/13/2021

Step 1

This allows ions to move from regions of high concentration to regions of low concentration. This movement is by simple diffusion. So, options a, b, d, and e are true. Show more…

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Which statement about ion channels is not true? a. They form pores in the membrane. $b .$ They are proteins. $c .$ All ions pass through the same type of channel. dovement through them is from regions of high concentration to regions of low concentration. $e .$ Movement through them is by simple diffusion.

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Key Concepts

Ion Channels

Ion channels are specialized protein structures embedded in the cell membrane that create pores for the selective movement of ions. They play a critical role in maintaining cellular homeostasis, generating electrical signals, and regulating cell functions.

Ion Selectivity

Ion channels are highly selective, meaning that each type of channel allows only specific ions to pass through based on factors such as ion size, charge, and hydration energy. This selectivity is essential for proper cellular signaling and maintaining distinct ion gradients across membranes.

Passive Diffusion

The movement of ions through ion channels typically occurs via passive diffusion, a process driven by the concentration gradient. Ions move from regions of higher concentration to lower concentration without the expenditure of cellular energy, although the process may also be influenced by the cell’s membrane potential.

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