Question

Plasmodesmata and gap junctions a. allow small molecules and ions to pass rapidly between cells. b. are both membrane-lined channels. c. are channels about $1 \mu \mathrm{m}$ in diameter. d. are present only once per cell. e. are involved in cell recognition in signaling.

Name: Problem 10, Chapter 15: Life: The Science of Biology
Uploaded: 2021-05-11T15:45:18-08:00
Duration: 1 min 15 s
Channel: Christina Sorrentino
Description: Plasmodesmata and gap junctions a. allow small molecules and ions to pass rapidly between cells. b. are both membrane-lined channels. c. are channels about 1 μm in diameter. d. are present only once per cell. e. are involved in cell recognition in signaling.

   Plasmodesmata and gap junctions
a. allow small molecules and ions to pass rapidly between
cells.
b. are both membrane-lined channels.
c. are channels about $1 \mu \mathrm{m}$ in diameter.
d. are present only once per cell.
e. are involved in cell recognition in signaling.

Life: The Science of Biology

Purves, William K.,… 7th Edition

Chapter 15, Problem 10

Instant Answer

Solved by Expert Christina Sorrentino

05/11/2021

Step 1

Plasmodesmata are microscopic channels which traverse the cell walls of plant cells and some algal cells, enabling transport and communication between them. Gap junctions are a specialized intercellular connection between a multitude of animal cell-types. They Show more…

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Plasmodesmata and gap junctions a. allow small molecules and ions to pass rapidly between cells. b. are both membrane-lined channels. c. are channels about $1 \mu \mathrm{m}$ in diameter. d. are present only once per cell. e. are involved in cell recognition in signaling.

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Key Concepts

Gap Junctions

Gap junctions are specialized intercellular channels found in animal cells that allow the passage of small molecules and ions. Formed by connexin proteins, these membrane-lined channels create a direct link between the cytoplasms of neighboring cells to enable rapid signaling and metabolic cooperation.

Plasmodesmata

Plasmodesmata are channels that traverse the cell walls of plant cells, allowing direct cytoplasmic connectivity between adjacent cells. They facilitate the transport of small molecules, ions, and signaling molecules, playing a key role in plant development and cell-cell communication.

Intercellular Communication

Intercellular communication is the process through which cells transmit signals and exchange small molecules, ions, and other metabolites. This communication is crucial for coordinating cellular behavior and maintaining homeostasis in multicellular organisms.

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