Concept 2 Flashcards
What is dynamic equilibrium?
Its maintained and isn’t always age same but stays in range
What is static equilibrium?
Is constant and unchanging
What is stimuli?
A change in the environment
What is homeostasis?
The need of an organism to stay stable by regulating internal conditions
What is positive feedback loops?
the output intensifies the response
What is an example of a positive feedback loop?
Childbirth and fruit ripening
What is a negative feedback loop?
The output causes a counter response to return to a set point (it does this to try and stabilize)
What is an example a negative feedback loop?
Human boy temp regulation, water concentration, and blood sugar regulation.
What is the role of the cell membrane in maintaining homeostasis on a cellular level?
It controls the movement of what goes in and out of the cell
What is passive transport?
It require no extra energy from the cells and molecules move from high to low concentration down the concentration gradient
What is active transport?
It requires extra energy (ATP) and that energy is spent by bringing materials out of the cell. Moves from high to low
What is facilitated diffusion?
Its passive and it transports large polar molecules and glucose
What is exocytosis?
Its active and it transports neurotransmitters.
What is endocytosis?
Its active and it captures bacteria
What is osmosis?
Passive and transports H20
