active transport and homeostasis

What type of transport is occurring in part C of the diagram?

• Passive Transport
• Osmosis
• Active Transport
• Facilitated Diffusion

Movement of particles across a membrane from an area of lower concentration to an area of higher concentration. 

• Facilitated Diffusion
• Osmosis
• Diffusion 
• Active Transport

Molecules naturally move from areas of _______ to ______ concentration.

• lower to higher
• higher to lower

This structure functions in determining what is allowed into and out of the cell.

• Nuclear Membrane
• Phospholipid bi-layer
• Cytoplasm
• Cell Wall 

____________ Transport costs the cell ATP (energy) because solutes are being transported from lower to higher concentrations. 

• Passive
• Facilitated Diffusion
• Active
• Osmosis

What does homeostasis mean?

• Temperature
• Water
• Cells
• Steady state

Look at the picture...are there more molecules inside (area A) or outside the cell (area B)?

• A
• B

What are four things that cells can do to maintain homeostasis?

• make new cells

• exchange materials

• rest

• eliminate wastes

• obtain and use energy

Organisms can respond to changes in their environment in order to maintain a balance, called homeostasis. What does a tree do to maintain homeostasis during the winter months?

• shivers

• hibernates

• absorbs sun

• loses leaves

Cells must be able to perform certain functions in order to survive. Which of the following must all cells do to survive?

• obtain energy

• absorb wastes

• utilize oxygen

• continue growing