Download Parts of a Cell

Parts of a Cell
- Looking Inside Cells
Plant and Animal Cells
Cell Wall
• Plants only
• Outer layer, rigid, strong, stiff; made of
cellulose
• Support, protection, allow movement of
materials in and out
Cell membrane
• Both plants and animal cell
• Plant- inside of cell wall
– Animals- outer layer; made of cholesterol
– Selectively permeable
• Support and protection
– Controls movement of materials in an out of cell
– Barrier between cell and its environment
– Maintain homeostasis
nucleus
• Both
• Large, oval
• Controls cell activities
- Looking Inside Cells
Nucleus
•The nucleus is the cell’s control center, directing
all of the cell’s activities.
NUCLEUOLUS
• BOTH
• INSIDE OF NUCLEUS
• HOLDS GENETIC INFO
Nuclear membrane
• Both
• Surrounds nucleus; selectively permeable
• Controls movement of materials in/out of
nucleus
cytoplasm
• Both
• Clear, thick, jellylike material and organelles
found inside cell membrane
• Support and protection of cell’s organelles
Endoplasmic reticulum
• Both
• Network of tubes or membranes
• Carries materials through cell
- Looking Inside Cells
Endoplasmic Reticulum
•The endoplasmic reticulum is similar to the
system of hallways in a building. Proteins and
other materials move throughout the cell by
way of the endoplasmic reticulum. The spots on
this organelle are ribosomes, which produce
proteins.
ribosomes
• Both
• Small bodies free or attached to E.R.
• Produces proteins
mitochondrion
• Both
• Bean shaped with inner membranes
• Breakes down sugar molecules into energy
- Looking Inside Cells
Mitochondrion
•Mitochondria are known as the “powerhouses”
of the cell because they convert energy in food
molecules to energy the cell can use to carry out
its functions.
vacuole
• Plants have large but only a few
– Animals have really small
• Fluid filled sacs
• Store food, water, waste
– Plants need it big to store large amounts of food
lysosome
• Plants rarely
– animals common
• small, round, with a membrane
• Breaks down larger food molecules into
smaller molecules
digests old cell parts
chloroplast
• Plants only
• Green, oval usually containing chlorophyll
• Uses energy from sun to make food for the
plant
- Looking Inside Cells
Golgi Body
•The Golgi bodies receive proteins and other
newly formed materials from the endoplasmic
reticulum, package them, and distribute them to
other parts of the cell.