What is used as a template during replication

DNA is made of a double helix of two complementary strands. When replicating, these strands seperate. Each strand of the original DNA then acts as a template for the production of it's counterpart, which is referred to as semiconservative replication. 

Photosynthesis uses light energy to convert carbon dioxide and water into glucose and oxygen gas

Explanation:

Each molecule of glucose essentially “stores” up to 38 molecules of ATP which can be broken down and used during other cellular reactions. ATP, or adenosine triphosphate, is the form of chemical energy cells use to function.