Does anyone know how small a cell is?

Cells are made of many parts  Organelles – literally means “little organs”  Each of these carries out a specific function.  Pick a partner and work together to list and describe the functions of each organelle in your diagrams.  Write this in your notebooks!  It will be checked for completion!

Plant Cell  Vacuole  Chloroplast  Cell membrane  Cell wall  Golgi apparatus  Mitochondrion  Smooth endoplasmic reticulum  Ribosome  Nuclear Envelope  Nucleolus  Nucleus  Rough endoplasmic reticulum

Animal Cell  Nucleolus  Nucleus  Nuclear envelope  Rough Endoplasmic Reticulum  Golgi apparatus  Ribosome  Cell membrane  Mitochondrion  Smooth Endoplasmic Reticulum  Centrioles

Bacterial Cell  Peptidoglycan- mesh-like layer outside plasma membrane of bacteria.  Cell wall  Cell membrane  Ribosome  Pili – connect bacterium to another  DNA- Deoxyribonucleic Acid, contains genetic code.  Flagellum – used for locomotion (movement)

What makes something living?

Characteristics of LIFE 1. Made up of cell/s  Multicellular – many cells  Unicellular – one cell

2. Able to reproduce  Sexual reproduction- two cells from different parents unite to produce a new organism.  Asexual reproduction- the new organism has one parent Characteristics of LIFE

3. Have genetic code from parent/s  Offspring resembles their parent/s  DNA carries the genetic code Characteristics of LIFE

4. Can grow and develop  Grow in size  Develop specialized cells  Mature Characteristics of LIFE

5. Need material (food) for energy  Metabolism- chemical reactions in which an organism breaks down and builds up materials to carry out life processes. Characteristics of LIFE

6. Respond to the environment  Stimulus- a signal to which an organism responds.  Light  Temperature  Low glucose levels Characteristics of LIFE

7. Maintain Internal balance  Homeostasis- maintaining internal conditions  Temperature  Water content Characteristics of LIFE

8. Evolution  Occurs over time ( a LONG time)  Over several generations  Adaptations to better suit their environment. Characteristics of LIFE

Discussion groups!

Observations!  Class discussions

 READ textbook pages  WRITE an argument explaining why a plant is a living thing and a rock is not.  Use ALL 8 Characteristics of living things in the argument.