Desmosomes primarily contribute to which cellular feature?

Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

Desmosomes primarily contribute to which cellular feature?

Desmosomes provide strong adhesion between neighboring cells, linking their intermediate filament networks so tissues can resist mechanical stress. They use cadherin proteins to connect cells across the membrane and anchor these connections to intermediate filaments (like keratin) inside each cell via plaque proteins, effectively distributing tension across the tissue. This is why they’re critical in stretch-prone areas such as skin and heart. Tight junctions seal spaces between cells, gap junctions form channels for rapid communication, and attachments to the extracellular matrix involve structures like hemidesmosomes, not desmosomes.

Desmosomes provide strong adhesion between neighboring cells, linking their intermediate filament networks so tissues can resist mechanical stress. They use cadherin proteins to connect cells across the membrane and anchor these connections to intermediate filaments (like keratin) inside each cell via plaque proteins, effectively distributing tension across the tissue. This is why they’re critical in stretch-prone areas such as skin and heart. Tight junctions seal spaces between cells, gap junctions form channels for rapid communication, and attachments to the extracellular matrix involve structures like hemidesmosomes, not desmosomes.

More practice questions