Which of the following occurs when a phosphate-phosphate bond in an ATP molecule is broken? a) Light energy is absorbed by chloroplast.
b) Water is transported through a cell membrane.
c) Energy is released in the cell.
d) Energy is stored in the muscle.

c) Energy is released in the cell.

Explanation:

Adenosine triphosphate (ATP) is used as an energy currency in the cell.

ATP is converted to ADP (adenosine diphosphate) when the bond between two of the phosphates is broken, and a phosphate is released.

This bond is a high energy bond, and when it is broken, lots of energy is released. This is why ATP is an energy currency inside the cell - when it is converted to ADP lots of energy is released.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation: