Describe the activity of the enzyme A at pH 6.

A dehydrated runner drinks a lot of water after a race. They rehydrate because

ATP is made by substrate-level phosphorylation during which step of cellular respiration?

Jan Baptista van Helmont did an important experiment related to photosynthesis. He weighed a small willow tree and a pot of soil. Janthen planted the tree in the pot. Over the course of five years, he added only water to the pot. At the end of five years, he weighed the tree and found that it had gained 74.4 kg. He weighed the soil, and it was only 57 g less. What do the results of this specific experiment demonstrate about what is needed for a plant to grow and increase its mass?

What structure does “A” eventually become?  

What is the function of the structures at “B”? 

   What is a function of the organ at pointer A.

Properly identify the stage labeled  “K”. Be specific.

  Identify the space indicated by the blue lines at “A”.

Identify one hormone produced by the organ at pointer A.