Overview
Stability of the internal environment and the mechanisms that maintain that stability
Homeostasis
What type of cellular transport moves substances without using energy?
Passive Transport
What is the sensory organ that receives the stimulus?
Receptor
Diffusion moves molecules from areas of high concentration to areas of what type of concentration?
Low concentration
What type of feedback loop works to return the body back to its normal range?
Negative Feedback
This type of diffusion involves the net movement of molecules from high to low concentration.
Ex. O2 and CO2
Simple Diffusion
What is an action that evokes a response?
Stimulus
In a _______________ solution the amount of water is lower than the cell’s cytoplasm.
–Net movement of water out of cell so the cell shrivels
Hypertonic
What type of feedback loop increases or amplifies a change instead of reversing it?
Positive feedback
This type of diffusion uses a transport protein to aid in the movement of molecules from high to low concentration.
Facilitated Diffusion
What is an organ that does the response?
Effector
In a ______________ solution the amount of water is higher than the cell’s cytoplasm. Net movement of water into a cell, the cell swells
Hypotonic
What biological molecules speed up chemical reactions to help maintain homeostasis?
Enzymes
Diffusion of water from high to low concentration.
Osmosis
the effect, caused by the stimulus is known as a ____________.
response
During active transport _____________ uses vesicles to export materials out of the cell.
exocytosis
What phrase describes a condition in which body systems fluctuate within normal limits rather than remaining perfectly constant?
Dynamic equilibrium
The sodium-potassium pump is an example of what kind of transport?
Active Transport
Which type of feedback loop is more commonly used to maintain homeostasis?
Negative feedback loops
During active transport, _____________ uses vesicles to move large particles into the cell.
endocytosis