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The energy that cells need comes originally
from the sun
Chloroplasts in plant cells trap light energy
from the sun and change it into chemical
energy
The chemical energy is stored in bonds
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Chemical energy is stored in bonds between
atoms of carbon, hydrogen, and oxygen
Both plant and animal cells break down the
molecules by breaking the bonds
Energy is released when the bonds are broken
Cells can either use the energy or store it
The mitochondria in plant and animal cells use
oxygen to release the energy in chemical bonds
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Cells store chemical energy In ATP molecules
When a cell needs energy, the ATP is broken
down
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The nucleus of plant and animal cells is the
control center of the nucleus
The nucleus contains DNA and RNA.
DNA has the instructions, or the code, for the
entire cell
DNA and RNA work together to make proteins
DNA in the cell’s nucleus determines what
kind of cell it is.
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When a cell divides and becomes two cells,
information needs to be passed on to the new
cell
This means that the DNA doubles when a cell
divides
A new cell contains the needed information to
carry out all of the cell’s activities