Chloroplasts & MitochondriaChloroplasts & Mitochondria

**Compare and contrast the functions of chloroplasts and mitochondrionCompare and contrast the functions of chloroplasts and mitochondrion

• The cellular machinery requires a continuous energy supply to do all the work of life.

• The two types of cellular power stations are organelles called chloroplasts & mitochondria.

• One harnesses light energy from the sun, and the other "unpacks" this captured energy into smaller packets that are useful for powering cellular work.

Cellular Respiration

• The process by which cells make ATP

Photosynthesis

• Process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and C6H12O6 (glucose or sugar).

ChloroplastsChloroplasts

• Plants and algae (plant-like protists) harness light energy through photosynthesis.

• Found only in Eukarya autotrophs/producers

the sunsugar

ChloroplastsChloroplasts

• Light Energy + water & carbon dioxide Sugars (which are used as chemical energy) & oxygen

• Found only in Eukarya autotrophs or producers

• Two membranes• Fluid filled space

(stroma)• Disk shaped

structures (thylakoids)

• Stack of disks (granum)

• Multiple stacks (grana)

ChloroplastsChloroplasts

Netrium digitus

A freshwater protist

MitochondriaMitochondriasingular: mitochondrionsingular: mitochondrion

• In all eukaryotic cells, mitochondria perform cellular respirationSugar

ATP = energy

MitochondriaMitochondriasingular: mitochondrionsingular: mitochondrion

• Sugar ATP

• (adenosine triphosphate)

ATPATP

• Adenine (blue part)• Ribose (red part)• 3 phosphates (green part)

MitochondriaMitochondriasingular: mitochondrionsingular: mitochondrion

• Double membrane

• Inner membrane has many folds .

MitochondriaMitochondriasingular: mitochondrionsingular: mitochondrion

• Inner membrane also has many enzymes for cellular respiration.

• MATRIX-Inner fluid filled space

Plant cells have both mitochondria and chloroplasts