Math Pitfall: Inverting the Top Fraction
Students often accidentally flip the numerator in complex fractions. Scaffold with color coding: Box the bottom fraction in blue. "Keep the top untouched, multiply, and flip only the denominator."
Math Pitfall: Misreading \((1, k)\) vs \((k, 1)\)
Students confuse \(x\) and \(y\). Reminder: Unit rate is always per ONE unit of \(x\) (horizontal axis). Therefore, the coordinate point is always \((1, \text{unit rate})\).
Science Pitfall: Plant Cells & Mitochondria
Students believe plant cells only have chloroplasts and no mitochondria. Clarify: Plants make glucose via chloroplasts, but still need mitochondria to convert glucose into ATP!
Science Pitfall: Active vs. Passive Transport
Analogy: Passive transport is rolling down a hill (high to low concentration, zero energy). Active transport is pushing a rock UP a hill (low to high, requires cellular ATP).
Turn to Page 2 for Complete Annotated Answer Key Page 1 of 2
Master Solution Key
Exam Blitz Workbook
All Items Solved
7 Total Points
1A. Slime Unit Rate:
\(\frac{1}{2} \div \frac{2}{3} = \frac{1}{2} \times \frac{3}{2} = \mathbf{\frac{3}{4}}\) tsp baking soda per cup glue.
1B. Cross-Multiply:
\(3 \cdot x = 15 \cdot 4 \implies 3x = 60 \implies \mathbf{x = 20}\).
2A. Cattle Ratio:
\(\frac{\text{beef}}{\text{dairy}} = \frac{4}{3} = \frac{b}{24}\). Since \(3 \times 8 = 24\), \(4 \times 8 = \mathbf{32}\) beef cattle.
2B. Apples Unit Cost:
Unit cost \(k = \frac{3.75}{3} = \$1.25/\text{lb}\). Equation: \(c = 1.25p\). Cost for 8 lbs: \(1.25 \times 8 = \mathbf{\$10.00}\).
3A. Graph Test:
Check: Passes through \((0,0)\) AND Forms a straight line.
3B. Unit Rate Location:
Correct choice: (B) \((1, k)\). At \(x = 1\), the \(y\)-coordinate gives \(k\).
3C. Equation Check:
\(k = \mathbf{3.5}\); When \(x=6\), \(y = 3.5(6) = \mathbf{21}\); Does \((0,0)\) satisfy? Yes.
10 Total Points
1. Organelles Match:
Nucleus: C
Mitochondria: B
Chloroplast: E
Cell Membrane: D
Ribosome: A
2. Organic Biomolecules:
Carbs: sugars & starches
Lipids: fats, oils & waxes
Proteins: speed up = enzymes
Nucleic Acids: double helix (DNA)
3. Energy Showdown Table:
• Respiration Organelle Location: Mitochondria ("powerhouse").
• Respiration Starting Materials: Glucose + Oxygen (\(O_2\)).
• Fermentation Definition: Releasing energy from food WITHOUT using oxygen.
Additional Study Guide Quick Notes:
• Microscopes: Light microscopes focus light through lenses; electron microscopes use beams of electrons.
• Organelle Definition: A specialized cell structure with specific functions.
• Simplest Substances: Elements (cannot be broken down into simpler substances).
• Compounds: Form when two or more elements combine chemically.
Teacher Guide • Resource Intervention for Unit Assessments Encourage students to review this sheet tonight! Page 2 of 2
3. Cell Origin All cells arise from pre-existing cells.
Levels of Biological Organization (Smallest → Largest)
1. Cell → 2. Tissue → 3. Organ → 4. Organ System → 5. Organism
Memory trick: Can Tom Open Our Oven? (Cell • Tissue • Organ • Organ System • Organism)
Science 7 • Part 2
Organelles: Structure & Role
🧠
Nucleus
The "Boss" • Contains DNA & directs cellular activity.
⚡
Mitochondria
The "Powerhouse" • Breaks down food into ATP energy.
☀️
Chloroplast
The "Solar Panel" • Captures sunlight to make glucose (Plants).
🛡️
Cell Membrane
The "Gatekeeper" • Selectively permeable entry & exit.
🏗️
Ribosome
The "Builder" • Tiny protein factories scattered in cytoplasm.
🌱 Plant Only: Chloroplasts + Cell Wall | 🐾 Both Plants & Animals: Nucleus & Mitochondria!
Science 7 • Part 3
Opposite Energy Reactions
Photosynthesis
Captures light → Stores chemical energy (sugar)
Sunlight + \(CO_2\) + \(H_2O\) →
Glucose (Sugar) + \(O_2\)
Occurs in: Chloroplasts
Cellular Respiration
Burns sugar with oxygen → Releases ATP energy
Glucose + \(O_2\) →
Energy (ATP) + \(CO_2\) + \(H_2O\)
Occurs in: Mitochondria
🏃 Fermentation Definition: Making energy from food WITHOUT oxygen!
Final 2 Minutes • Strategy Lock-In
Tomorrow's Big Test Day
🔍
Read Every Label
For math: check units (cups vs tsp, pounds vs dollars). Write the label next to every number!
🎯
Eliminate 2 Bad Choices
On multiple choice, cross out the 2 obviously wrong answers before selecting your best answer.
💪
Trust Your Preparation
You know Keep-Change-Flip, \(y = kx\), Cell Theory, and Organelle functions. You've got this!
Take your completed review workbook home to glance over tonight! 🌟
