How does atp supply energy for cellular activities?

a. by breaking off a phosphate group from its structure
b. by releasing the sugar molecule from its structure
c. by adding a phosphate group to its structure
d. by attaching itself to a glucose molecule

I think the correct answer from the choices listed above is option A. ATP supply energy for cellular activities by breaking off a phosphate group from its structure. The energy is released when ATP becomes ADP. This happens by processes called oxidative phosphorylation and active transport.

ATP supplies energy for cellular activities by breaking off a phosphate group from its structure.

ATP is produced through the process of cellular respiration where food particles such as glucose are broken down to yield energy in the form of ATP.

Further Explanation Cellular respiration Cellular respiration is the process of by which living organisms use nutrients or food substances to generate energy in the form of ATP that is required to drive cellular processes. Cellular respiration takes place in an organelle known as mitochondrion which is known as the powerhouse of the cell. Cellular respiration takes place in three stages; glycolysis, Kreb's cycle and electron transport.  Each step of cellular respiration yields ATP with the electron transport chain yielding the most number of ATP molecules, 34 ATP molecules. ATP ATP is the energy carrier molecule in the cells of living organisms. It is the usable form of energy by the cells in all living forms. Cells use ATP to drive all the cellular activities such as transport, excretion, growth and development, etc. ATP is produced through the process of cellular respiration where food particles such as glucose are broken down to yield energy in the form of ATP. Hydrolysis of ATP ATP molecule is made up of a nucleotide base adenine attached to three phosphate groups. Energy is contained in the bonds between the phosphates in an ATP molecule which is released when they are broken through the addition of water molecules a process called hydrolysis. ATP powers cellular processes by transferring phosphates group in its structure to other molecules which releases energy required to drive the cellular activities.

Keywords: cellular respiration, ATP, energy  

Learn more about:  Aerobic respiration: Anaerobic respiration: Stages of cellular respiration: Electron transport chain: Hydrolysis of ATP:

Level: High school  

Subject: Biology  

Topic: Cellular respiration

Dthrough a slow process