C) matter is changed into various forms but the total quantity remains unchanged.
Different colored bands in each solvent signify the different materials that are found in the substance that is been analysed.
The green band in the solvent represent the green chlorophyll which are found in leaves. Chlorophyll is the substance which gives the plants the capacity to trap energy from the sun for production of food.
Answer:
the role of DNA helicase is to unwrap DNA and spread it.
or unwind the DNA at the replication fork.
