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Study Stack Part 2

QuestionAnswer
Name the 2 types of feedback loops Positive and negative
What are the 3 necessary components of a homeostatic feedback loop? receptor, control center, effector
A sensor that monitors and responds to changes in the environment is called the receptor
Determines the level or set point at which a variable is to be maintained. Analyzes the information received by the receptor. control center
Provides a way for the response to get back t the stimulus and either stop it or enhance it effector
T or F Most of the homeostatic feedback mechanisms are positive feedback systems. F
Negative feedback loop examples help with blood glucose regulation, like a thermostat in your house, blood pressure regulation, body temperature
Example of positive feedback loop childbirth
Negative feedback is a process that happens when your systems need to slow down or completely stop a process that is happening.
Positive feedback is the opposite of negative feedback and ... amplifies the action of a system
Stimulus means a change in the environment
A response is the manner in which the organism reacts to the stimuls
3 types of passive transport(no energy required) diffusion, facilitated diffusion, osmosis
types of active transport (energy required) endocytosis (phago-eating solids, pino-liquids) exocytosis, protein pump - ex. sodium/Potassium pump
Purpose of diffusion is to reach a balance on both sides of a membrane
Function of the plasma cell membrane selectively permeable, maintain homeostasis
ATP stands for energy
Facilitated diffusion requires no energy, uses a transport protein to move substances across the cell mebrane
Benedict's Chemical indicator for the presence of simple sugar
Iodine Chemical indicator for the presence of complex sugar- starch
Function of exocytosis is to to the rid the cell of wastes
Ex. of diffusion smell of perfume, smell of coffee, food coloring in water,
Where is energy (ATP)produced? mitochondria
Created by: pmosley
 

 



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