Integrative Physiology and Ecology: Complex Multicellularity and Its Implications

These flashcards cover key vocabulary from the lecture on complex multicellularity, its requirements, mechanisms, and developmental implications.

Complex Multicellularity

A condition where organisms are made up of many cells that work in an integrated manner, allowing for specialized functions and structures.

Bulk Flow

A method that allows movement of substances through an organism, circumventing limitations imposed by diffusion.

Cell Adhesion

The ability of cells to stick to one another, which is crucial for forming multicellular organisms.

Coenocytic Organization

A form of multicellularity where cells have multiple nuclei but are not divided into individual cells.

Diffusion

The process by which molecules spread from areas of high concentration to areas of low concentration; limited in multicellularity since not all cells are in direct contact with the environment.

Vascular System

The system in plants responsible for the transport of water and nutrients from the soil to leaves and sugars from leaves to other parts of the plant.

Apical Membrane

The surface of an epithelial cell that faces the lumen or outside of the tissue, important for absorption and secretion.

Signaling Pathways

Biochemical processes through which cells communicate and respond to environmental signals, guiding development and differentiation.

Gap Junctions

Protein channels that permit communication between adjacent cells by allowing ions and signaling molecules to pass.

Meristems

Regions of rapidly dividing cells in plants that allow for growth and development, typically found at the tips of roots and stems.