Let's solve the problem step by step based on the image you've provided. This worksheet focuses on
active transport in cells, particularly the
sodium-potassium pump, which is a classic example of
primary active transport.
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🔹 Part 1: Top Diagram (Circular Transport System)
#### Question:
What type of transport is represented by the following picture?
✔ Answer: Active transport
> Because it requires energy (ATP), as shown in the diagram, and moves substances against their concentration gradient.
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#### Question:
What energy is being used?
✔ Answer: ATP (Adenosine Triphosphate)
> The diagram shows ATP being broken down into ADP and Pi (inorganic phosphate) to fuel the process.
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#### Question:
In which direction (concentration gradient), is the movement occurring?
✔ Answer: Against the concentration gradient
> Active transport moves substances from an area of lower concentration to an area of higher concentration, which requires energy.
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#### Instructions:
-
Color the internal environment of the cell yellow → Already done (yellow circle labeled "INSIDE CELL").
-
Color and label the transport proteins red → The red structures in the membrane are the transport proteins.
-
Color the substance being moved blue → The small blue dots (likely ions) are the substances being transported.
> So, color the
blue dots blue, and
label them (e.g., "ions" or "substances").
---
🔹 Part 2: Sodium-Potassium Pump Diagram
This section describes the
Na⁺/K⁺ pump, a specific example of
primary active transport.
#### Fill-in-the-blanks:
> One type of active transport is called the
sodium-potassium pump which helps muscle cells contract. This pump uses
ATP to move ions
against the concentration gradient. The protein that is used to pump the ions through is called a
carrier protein and it changes its
shape to move the ions across the cell membrane.
✔ Answers:
1.
ATP
2.
against
3.
carrier
4.
shape
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#### Instructions:
-
Label and color the carrier proteins red → Already colored red in the diagram.
-
Color the ions green → Color the green hexagons (representing ions like Na⁺ or K⁺) green (they already appear green).
> Note: In real biology, the sodium-potassium pump moves
3 Na⁺ out and
2 K⁺ in per ATP molecule. The diagram likely simplifies this for educational purposes.
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✔ Final Summary of Answers:
####
Top Section:
- Type of transport:
Active transport
- Energy used:
ATP
- Direction of movement:
Against the concentration gradient
####
Bottom Section (Sodium-Potassium Pump):
- Uses:
ATP
- Movement:
against the concentration gradient
- Protein:
carrier protein
- Changes its:
shape
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🎨 Coloring Guide:
-
Inside cell: Yellow
✔ (already done)
-
Transport proteins: Red
✔ (already done)
-
Substances (ions): Blue (top diagram) and Green (bottom diagram)
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💡 Explanation:
The
sodium-potassium pump is essential for maintaining the electrochemical gradient across the cell membrane. It uses
ATP hydrolysis to change the shape of the carrier protein, allowing it to bind and transport
Na⁺ out and
K⁺ in, even though both movements go
against their gradients. This creates a vital setup for nerve impulses, muscle contraction, and nutrient absorption.
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✔ All questions answered!
If you need a printable version with colors filled in, let me know—I can guide you through it.
Parent Tip: Review the logic above to help your child master the concept of cell membrane coloring worksheet answer key biology junction.
