Cell Communication Flashcards
Cell specialization
Cells throughout an organism can develop in different ways to perform different tasks also called differentation
Communications depends on
Cell specialization
Communication
Cooperation
Why is cell communication vital
Allows organisms to coordinate activity of all cells
Chemical signaling includes
Chemicals that can freely release
Received by contact
Chemicals that diffuse from ones cytoplasm to another via gap junctions directly linking cytoplasm of adjacent cells. Many cells can react same time
Receptor proteins
On outside of cells and have unique shapes that allows it to bind only to certain molecules
Key in nerve cell is neurotransmitter
Other keys are hormones
Nuerotransmitters
A chemical used by a neuron to transmit an impulse across a synapse from one nerve cell to another
Synapse
Location at which a neuron can transfer an impulse to another cell
Hormones
A chemical that is produced in one part of an organism and affects another part of the same individual
Hormones in plants
Controls plants patterns of growth and development and the plants responses to environmental conditions
Charles Darwin
Discovered first plant hormone auxin and are produced in growing tip of plants
Stimulate cell Elongation is responsible for
Phototropism
Gravitropism
Cell division
Hormones in animals
Hormones and chemicals travel from one part of the body to another and affect activities in cells and able to by binding to chemical receptors called target cells
What happens when the hormone connects in the lock
The Part of the Protein inside the cell changes shapes and activates a signal
Levels of organization
Cells. Tissue. Organs Organ systems
Organization creates a division of labor that makes multicellular life possible
Tissues
A group of cells that perform a particular function
Major types are muscle epithelial nervous and connective
