Textbook Question
Add labels to the figure that follows, which illustrates some molecules that can and cannot pass through cell membranes unaided.
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6. The Membrane
Introduction to Membrane Transport
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Roots absorb which of the following substances from the soil?
A
Carbon dioxide
B
Glucose
C
Oxygen
D
Water and minerals
Verified step by step guidance1
Understand the function of roots: Roots are primarily responsible for anchoring the plant and absorbing water and minerals from the soil.
Recognize the substances typically absorbed by roots: Roots absorb water and essential minerals, which are crucial for plant growth and development.
Identify what roots do not absorb: Roots do not absorb carbon dioxide or glucose. Carbon dioxide is absorbed by leaves during photosynthesis, and glucose is produced by the plant itself.
Consider the role of oxygen: While roots do require oxygen for respiration, they do not absorb it from the soil in the same way they absorb water and minerals.
Conclude with the correct answer: The primary substances absorbed by roots from the soil are water and minerals, which are vital for the plant's survival and growth.
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