1.Cells are filled with cytoplasm and organelles, each with specific
functions
2.Gene expression controlled by chemical signals determines cell
type
3.Genes are discrete units; dominant/recessive patterns determine
expression
4.Mutations can be beneficial, harmful, or neutral depending on
context
[!] STUDY GUIDE: Big Ideas
Use to answer form questions!
1.Cells specialize to do specific jobs. Even though
all cells have the same DNA, they "turn on" different genes to
become muscle, nerve, skin, or other cell types.
2.Structure matches function. A cell's shape and
organelles are designed for its job (nerve cells are long for
signals, muscle cells contract).
3.Cells organize into levels. Similar cells form
tissues, tissues form organs, organs form systems, systems make an
organism.
Cells->Tissues->Organs->Organ Systems->Organism
LEVELS OF ORGANIZATION: From Cells to Whole Organisms
[#] KEY TERMS
Define in YOUR words
Specialized Cell
A cell with a specific job
Tissue
A group of similar cells working together
Organ
Multiple tissues working together
Organ System
Group of organs with a shared func…
[?] THE PHENOMENON
Write BEFORE Hook form
Why do different body parts look and act so differently if they all
came from one cell?
Your brain cells look completely different from your muscle cells or
skin cells. Yet they all came from the same fertilized egg and have
the exact same DNA. How is that possible?
Your initial thinking:
[>] AFTER HOOK FORM
Reflect, then continue+2 pts
I learned that...
Station 1 — Cell Type Investigation
Nerve cells are shaped like _____ because...
Muscle cells differ from skin cells by...
Key insight:
Station 2 — Tissue Organization
The four tissue types are...
An organ contains multiple tissues because...
Key insight:
[/] DAY 1 EXIT TICKET
Complete before leaving+5 pts
Q1:
Why do nerve cells have long extensions while red blood cells are
round and flat?
Q2:
Put these in order from smallest to largest: organ, cell, tissue,
organ system.
Confidence:
Cell Specialization & Tissues (continued)
Name:
[=]Day 2 start
Station 3 — Design a Specialized Cell
My cell's job is to...
My cell needs these structures because...
My cell's shape is _____ because...
Key insight:
[+] MAKING CONNECTIONS
Use for Exit Ticket!
How does what you learned about organelles in Week 1 connect to cell
specialization?
Why can't a single cell do everything a whole organism needs?
[/] DAY 2 EXIT TICKET
Final check before Science Circle+5 pts
Q1 (NEW):
How can cells with identical DNA become so different from each
other?
Q2 (SPIRAL-W1):
Why would a muscle cell have more mitochondria than a skin cell?
Q3 (INTEGRATION):
Explain how the heart is an example of cells -> tissues -> organs ->
systems working together.
CHECKTEST YOUR THINKINGRate each: FALSE ← 1–2–3–4–5 → TRUE
1. Cells are hollow or empty inside
F12345T
2. Cell specialization is random or luck-based
F12345T
3. Traits from parents blend like mixing paint
F12345T
4. Mutations are always harmful
F12345T
5. Cells are filled with cytoplasm and organelles, each with specific functions
F12345T
Pick any TWO statements — especially any you rated 2, 3, or 4. Justify your rating with evidence:
Statement #___ — I rated it ___ because:
Statement #___ — I rated it ___ because:
[O] SCIENCE CIRCLE
~15 min | End of week+3 pts
[!] My "Aha!" Moment
[?] My Remaining Question
Discussion Protocol: Share ahas, listen actively,
record class discoveries.