8/22/2023 Agenda 1.2 (Unit 1, Day 2)
Get out your Unit 1 notes packet and vocabulary page
Organelles
Learning objective: describe the structure and function of organelles found in cells
1. (2 min)
2. (25 min)
Bell ringer: Which biomolecule is used for long term energy?
Continue working on Unit 1 Vocabulary
◆ You should finish this today. If not, it is homework - we have a vocabulary quiz on
Thursday!
◆ Name of study set is Unit 1 Vocabulary
3. Notes: Organelles
4. Activity
5. If you finish early, study the quizlet to prepare for our vocabulary quiz on Thursday.
Topic 2:
Organelles
Nucleus
● Controls activities of the cell and contains
DNA (genetic material)
○ The “CONTROL CENTER”
● Surrounded by a nuclear membrane
● Contains the nucleolus, where ribosomes
are made
Cell Membrane
● Regulates (controls) what can enter and exit the cell
○ The “BODYGUARD”
● Mostly made of lipids and proteins
● Found in all living things
Organelles
● Cytoplasm is the clear, jelly like fluid that fills the cell
● Endoplasmic Reticulum ○ The “HIGHWAY” - transport
○ Rough ER: has ribosomes attached (makes proteins)
○ Smooth ER: no ribosomes attached (makes lipids and
phospholipids)
● Ribosomes
○ Make proteins
○ Found in cytoplasm and rough ER
Organelles
● Golgi apparatus
○ Flattened, membrane-bound sacs that work like the
packaging and distribution center of the cell
○ The “POST OFFICE” - transport
● Mitochondria
○ Uses cellular respiration to break down glucose for
energy (ATP)
○ The “POWER HOUSE”
Organelles
● Lysosomes
○ Specialized sacs that contain digestive enzymes
○ These enzymes break down and recycle waste materials
○ The “STOMACH”
● Cell wall
○ Provides support and protection
● Chloroplasts
○ Location of photosynthesis
● Large central vacuole - plants only
○ Storage of water and nutrients
Cell Basics (intro to Thursday’s topic)
● All cells are either prokaryotic or eukaryotic
● Prokaryotic cells are simple, and they don’t have:
○ A nucleus
○ Membrane bound organelles
● Eukaryotic cells are more complex, and they do have:
○ A nucleus
○ Membrane bound organelles