Let's solve both questions step by step.
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Q.2: Use the words in the box to label terms in the model illustrated below.
The image shows a cell membrane with different types of molecular transport across it. The key terms provided are:
- Facilitated Diffusion
- Diffusion
- Active Transport
- Passive Transport
We need to correctly label the processes shown in the diagram.
####
Understanding the Diagram:
1.
Left side (Passive Transport):
-
First process (black molecules): Molecules move from high concentration to low concentration
without help, directly through the membrane.
- This is
Diffusion.
-
Second and third processes (green and pink molecules): Molecules move from high to low concentration but
through protein channels or carriers.
- These are examples of
Facilitated Diffusion.
2.
Right side (Active Transport):
- Molecules are moving
from low to high concentration (against the gradient).
- Energy (
ATP) is used.
- This is
Active Transport.
####
✔ Correct Labels:
-
Passive Transport: Top left box → already labeled correctly.
-
Diffusion: First pathway (black molecules) → labeled correctly.
-
Facilitated Diffusion: Second and third pathways (green and pink molecules) → labeled correctly.
-
Active Transport: Right side → labeled correctly.
✔ So, the diagram is
already correctly labeled with the given terms.
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Q.3: Which of the following is NOT a type of passive transport?
Options:
a) Diffusion
b) Endocytosis
c) Facilitated Diffusion
d) Osmosis
#### Let's analyze each:
-
a) Diffusion: Yes, this is passive transport — movement down the concentration gradient without energy.
-
b) Endocytosis: This is
active transport — the cell uses energy (ATP) to engulf materials into vesicles. It
requires energy and is not passive.
-
c) Facilitated Diffusion: Passive — uses proteins but no energy; moves down the gradient.
-
d) Osmosis: A special type of diffusion (of water), also passive.
####
✔ Correct Answer:
b) Endocytosis
Because
endocytosis requires energy and is therefore
not a passive process.
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✔ Final Answers:
Q.2: The diagram is correctly labeled as:
-
Passive Transport → includes
Diffusion and
Facilitated Diffusion
-
Active Transport → moves substances against gradient using ATP
Q.3: b) Endocytosis is
not a type of passive transport.
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Let me know if you'd like a simplified version or visual explanation!
Parent Tip: Review the logic above to help your child master the concept of active transport worksheet answers.
