Energy and Life

In the diagram of the molecular structure of ATP (adenosine triphosphate), which of these events occurs during normal function of ATP in the cell?

• A chemical bond forms between the adenine unit and the third phosphate group.

• The chemical bond breaks between the adenine and ribose units.

• The chemical bond breaks between the ribose unit and the phosphate group.

• The chemical bond breaks between the second and third phosphate group.

Tags

NGSS.HS-LS1-7

Cells use a molecule called ______________to store and release energy like a battery.

• DNA

• RNA

• ATP

• CMP

The energy is stored in chemical bonds between ____________ groups of the molecule, and the energy is released when the chemical bonds are broken.

• nucleotide

• oxygen

• ribose

• phosphate

Tags

NGSS.HS-LS1-7

Plants, algae, and some bacteria use the energy of sunlight in the process of

• herbivory

• respiration

• photoperiodism

• photosynthesis

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

The process of photosynthesis converts the energy from sunlight into chemical energy stored in the bonds of

• carbon dioxide

• carbohydrates

• water molecules

• proteins

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which statement best describes the relationship between ADP and ATP?

• With an input of energy, ADP rearranges and becomes ATP.

• With an input of energy, ADP combines with a phosphate group to become ATP.

• Without any energy change, ADP rearranges to become ATP.

• With a release of energy, ADP combines with a phosphate group to become ATP.

Mold gains its energy by decomposing the items like bread, fruits, and vegetables. Should mold be classified as an autotroph, heterotroph, or considered both a heterotroph and autotroph?

• autotroph

• heterotroph

• both an autotroph and a heterotroph

A molecule of ATP has __________phosphate groups.

• two

• three

• four

• none