Page 115 - Science Course 1 (Book 1)

Mo4-L2a: What Makes a Plant Survive and Grow?

Photosynthesis can be shown by the following
equation:
Light Energy

6 +6 +6
CO2 H2O C6H12O6 o2

The process of cellular respiration breaks down the
glucose produced during photosynthesis and
releases the sugar’s energy.

Cellular respiration occurs in the cytoplasm and
mitochondria.
Photosynthesis occurs inside organelles called
chloroplasts. Chloroplast

Chloroplasts contain chlorophyll, a green pigment
that absorbs light energy.
Photosynthesis
That energy splits apart water molecules into
hydrogen atoms and oxygen atoms.
H20 CO2 ATP sugar O2
Outer membrane
Granum
Thylakoid Cellular Respiration

Mitochondrion

The equation for cellular respiration is as follows:

+6 6 +6 + ATP
Stroma C6H12O6 o2 CO2 H2O Energy
Inner membrane in ATP
C6H12O6 + 6O2 6CO2 + 6H2O + ATP (Energy)
Some of the oxygen leaves the plant through the
stomata. Cellular processes such as growth, repair, and
reproduction all use ATP.
Carbon dioxide combines with the hydrogen atoms
and forms glucose, a type of sugar. Plants and some other organisms can use the waste
products of cellular respiration—carbon dioxide and
A plant can store sugars, and it uses some of the water—to make more glucose through
oxygen in another process called cellular respiration. photosynthesis.
Chloroplast

Photosynthesis

H20 CO2 ATP sugar O2

Cellular Respiration

108 Mitochondrion