Question

ib unit 2.1 cell energy and photosynthesis quiz 20
which of the following is not a true statement about atp?
atp provides energy for the mechanical functions of cells.
used atp is discarded by the cell as waste.
adp forms when atp releases energy.
atp consists of ribose, adenine, and phosphate.

Explanation:

ATP is the energy - currency of the cell. When ATP releases energy, it forms ADP (adenosine diphosphate). ATP is composed of ribose, adenine, and phosphate groups. Used ATP (ADP and inorganic phosphate) is not discarded as waste but is recycled to form ATP again through cellular respiration and other energy - generating processes. It provides energy for mechanical functions of cells.

Answer:

"Used ATP is discarded by the cell as waste." is not a true statement.