Question

1. The concentration of nitrate ions in a root cell is higher than in the surrounding soil
solution. How do the nitrate ions move into the root cell?
A. Active transport
B. Diffusion
C. Osmosis
D. Transpiration

Answer 1

Answer:

Active transport

Active transport – Higher tier only

The root hair cells have carrier proteins in their cell membranes. These pick up the mineral ions and move them across the membrane into the cell against the concentration gradient

Explanation:

Answer 2

Answer:

A Nitrate ions enter the root hair cell by active transport. Correct answer C) Nitrate ions enter the root hair cell by osmosis.

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