Which organelle is present in plant cells but not animal cells?

What is this molecule?  

Which of these do all prokaryotes and eukaryotes share?        

Which of the following fermentation methods can occur in animal cells?  

An oak tree would be considered a:

Which molecule absorbs the energy of a photon in photosynthesis?              

Which of the following steps of cellular respiration makes the most ATP?

Identify the following structures of the cell below.

Choose one type of membrane transport and explain, in 3 or more sentences, whether it is passive or active and how it occurs.  

Extra Credit: Respond in at least three sentences for five (5) points.   As concerns about climate change grow, scientists are exploring ways to use plants to help reduce the levels of carbon dioxide in the atmosphere. One proposal involves planting large numbers of trees in areas where deforestation has occurred, since plants absorb carbon dioxide during photosynthesis. Question:Using your understanding of photosynthesis, explain how planting more trees could help slow the effects of climate change. What role does carbon dioxide play in photosynthesis, and how does this process help reduce atmospheric carbon dioxide levels? Additionally, what are some limitations or challenges to relying solely on reforestation as a solution to climate change?