Homeostasis

Which of the following describes homeostasis?

• keeps variables exactly at the set point

• organism's ability to maintain steady(stable) internal conditions

• acts to keep values outside of a desired range

• operates through positive feedback

What type of transport is this?

• facilitated diffusion

• active transport

• diffusion

• osmosis

When something is 'water fearing' it is....

• Hydrophobic

• Hydrophilic

What are two types of passive transport?

• endo and exocytosis 

• in a minute and later

• hydrophobic and hydrophilic 

• osmosis and diffusion

What is this image?

• cell membrane

• mitochondria

• golgi apparatus

• endoplasmic reticulum

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail

• Hydrophobic Head, Hydrophilic Tail 

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell

• Certain things can enter while others cannot

• 
  The cell manually sorts through all materials

• Only certain cells can interact with the cell.

Which part of this phospholipid is hydrophobic?

• fatty lipid tails

• head

• all of it is hydrophobic

• none of it is hydrophobic

Describes the arrangement of the cell membrane as bendable and made of many parts. 

• The Fluid Mosaic Model 

• The Major Mobility Model 

• The Crazy Cell Model

• The Maze Model

The picture is an example of...

• 
  active transport

• passive transport

• diffusion

• osmosis