Cell & Molecular Biology - Cell Interactions Lecture

These flashcards cover key concepts related to cell interactions, signaling, and structures based on the lecture notes.

Cells in multicellular organisms must communicate and cooperate with each other: __ community of cells.

Interdependent

The __ is made up of phospholipid bilayer studded with proteins.

plasma membrane

Extracellular matrix provides __ support and connects cells in tissues.

structural

Tight junctions form __ seals between adjacent animal cells.

waterproof

The primary cell wall in plants counteracts __ pressure as water enters.

turgor

Desmosomes comprise linking proteins called __.

cadherins

In animal tissues, gap junctions allow the flow of small __ between cells.

molecules

The signaling molecules that deliver messages by binding to receptor molecules are called __.

ligands

Steps of cell signaling include signal reception, signal transduction, and __ response.

cellular

Collagen is the major fibrous component of the __ matrix.

extracellular

G-protein coupled receptors are regulated by guanine __.

nucleotides

The ultimate response to messages from signaling molecules includes changes in gene __.

expression

Insulin signaling example shows how high blood glucose levels activate secretion of __ hormone by the pancreas.

insulin

Second messengers diffuse rapidly throughout cell and can be produced quickly in __ quantities.

large

Phosphorylation causes __ change and activation of target proteins using ATP.

conformational

Cells use __ to remain sensitive to small changes in signaling.

phosphatases

Integrins connect cells to the extracellular __.

matrix

Cadherins link proteins in desmosomes and allow cells of the same type to attach __ to each other.

specifically