Pulling it Together

Osmosis and Cellular Respiration and DNA

Frozen Frogs

Maryland Science Content Standard

• Based on data from readings and designed investigations, cite evidence to illustrate that the life functions of multicellular organisms (plant and animal) are carried out within complex systems of different tissues, organs and cells.

• Extracting energy from food • Getting rid of wastes • Making raw materials

Objective

• Students will make connections between osmosis, cellular respiration, and mutations that allows the frogs to survive even in the harshest conditions.

Frozen Frogs

• View quick movie on Frozen Frogs

– Click here

• View a second time, paying special mind to anything that may pertain to what we have learned in class about osmosis, cellular respiration, and mutations.

Read Twice

• Click on the link below to read the background essay: Frozen Frogs

– Click Here

• Read a second time, paying special mind to anything that may pertain to what we have learned in class about osmosis, cellular respiration, and mutations.

Answer in Notebook

• Why is it beneficial for the wood frog to become frozen during the winter?

• How does the process of osmosis play a role in the survival of the tree frog?

• If the frog was not able to freeze on the inside, how would the process of osmosis end up taking the life of the frog?

• What did the frogs do to ensure that cellular respiration takes place in their cells? Support your answer with evidence from the video and the article.

Answer in Notebook

• Using what you know about osmosis, cellular respiration, and mutations, what makes it possible for the tree frog to freeze itself?