Bio Blueprint Study Guide
Bio Blueprint
May Exam Study Guide 2026
Student:
Period:
BIO.5C BIO.12A BIO.10C
1. Homeostasis & Balance
Key Definition
The ability of an organism or cell to maintain ___________________________ __________________________.
The Goal
Cells try to maintain ________________ inside the cell.
Sweating
Body is ________
Shivering
Body is ________
Dehydration
Take in ________
2. Gatekeeper: Membrane
The cell membrane controls what ________________ and ________________ the cell.
Selectively Permeable:
Semipermeable:
Concentration Gradient:
3. Cellular Transport
No Energy vs. ATP
Passive Transport
Movement WITHOUT energy (ATP).
Diffusion
Moves HIGH → ______
Osmosis
Moves __________ across membrane.
Facilitated
Moves through ________ channels.
Active Transport
Movement USING energy (ATP).
Flow
Moves ______ → ______
Ion Pump
Sodium-________________ pump.
Endo
Takes IN
Exo
Takes OUT
4. Lab Evidence
Egg Osmosis Experiment
An egg in pure water will ________. This is because water ________ the egg.
Dialysis Tubing Lab
The iodine moves ________, but the starch stays ________.
5. Systems
Hormones signal the ________________ to conserve water.
Result: Urine production ________________.
6. Evolution
Speciation: Formation of a new ____________ caused by
________________ isolation.
Part I • Multiple Choice Review
1. Which type of transport requires ATP?
A. Diffusion
B. Osmosis
C. Active
D. Facilitated
2. Function of the cell membrane?
A. Energy
B. Store DNA
C. Controls flow
D. Make proteins
3. Diffusion moves molecules from —
A. Low-High
B. High-Low
C. One-Another
D. Outside only
4. Water moves via —
A. Endo
B. Exo
C. Osmosis
D. Active
5. Facilitated diffusion uses —
A. Ribosomes
B. Proteins
C. Vacuoles
D. Chloroplasts
6. In a hypotonic solution, cells —
A. Shrink
B. Swell
C. Lose oxygen
D. Stop working
7. Active transport example?
A. Oxygen
B. Water
C. Ion pump
D. Perfume
8. Why is ATP important?
A. DNA
B. Cell energy
C. Proteins
D. Waste
9. Semipermeable membranes —
A. Allow all
B. Block all
C. Allow some items
D. Only water
10. Example of speciation?
A. Extinction
B. Population forming new species
Part II • Matching
Homeostasis
Osmosis
Diffusion
Active Trans.
Speciation
A Movement of water
B Requires ATP energy
C Stable internal conditions
D High to Low conc.
E Formation of new species
Part III • Short Answer
1. Difference between passive and active transport?
2. How does osmosis help maintain homeostasis?
3. Describe what happens during facilitated diffusion.
4. Why is the cell membrane called semipermeable?
5. How can geographic isolation lead to speciation?
Bio Blueprint Answer Key
Bio Blueprint
TEACHER ANSWER KEY
May Exam 2026
Section 1: Homeostasis
Definition: Maintaining stable internal conditions
The Goal: Balance
Examples: Sweating (Hot) / Shivering (Cold) / Taking in water
Section 2: Cell Membrane
Function: Enters and leaves
Selectively Permeable: Allows some materials through but not others
Semipermeable: Another word for selectively permeable
Concentration Gradient: Difference in concentration between two areas
Section 3 & 4: Transport & Labs
Passive Transport
- • WITHOUT energy
- • Diffusion: High to Low
- • Osmosis: Water
- • Facilitated: Protein channels
Active Transport
- • USING energy (ATP)
- • Flow: Low to High
- • Pump: Sodium-Potassium
- • In/Out: Endocytosis/Exocytosis
Labs
- • Egg: Swell / Enters
- • Dialysis: Into / Starch
- • Molecules: Small / Large
Systems & Evolution
- • Hormones / Kidneys / Conserve
- • Species
- • Geographic Isolation
Part I: Multiple Choice Key
1. C
2. C
3. B
4. C
5. B
6. B
7. C
8. B
9. C
10. B
Part II & III: Matching & Short Answer
Matching Order:
C, A, D, B, E
1. Passive uses no energy (High to Low); Active requires ATP (Low to High).
2. It moves water to balance concentrations, keeping the cell stable.
3. Molecules move through protein channels without using energy.
4. It only allows certain (usually small) substances to pass through.
5. Barriers prevent interbreeding, causing separate populations to evolve differently.