If a has a free energy of 38 units, and c has a free energy of 45 units, and the reaction is exergonic, based on the calculation of free energy, which is the substrate and which is the

C is the substrate

A is the product

Explanation:

Exergonic reactions are the ones that release energy during the course of the conversion of substrates into the products. The free energy content of the substrates of exergonic reactions is higher than that of their products. This excess energy is released during the reaction. In the given reaction, the free energy content of C is 45 units which is higher than the free energy content of A (38 units). This means that the substrate "C" has undergone an exergonic reaction and is being converted into the product "A".

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.