Oxygen will diffuse across gill membranes into the blood because _____.
A) oxygen is in higher concentration in the blood compared to the water
B) oxygen is in lower concentration in the water compared to the blood
C) oxygen is in higher concentration in the water than in the blood
D) oxygen is in equal concentration in both the blood and the water
E) the gills attract oxygen chemically

Question

Oxygen will diffuse across gill membranes into the blood because _____.​
A) ​oxygen is in higher concentration in the blood compared to the water
B) ​oxygen is in lower concentration in the water compared to the blood
C) ​oxygen is in higher concentration in the water than in the blood
D) ​oxygen is in equal concentration in both the blood and the water
E) ​the gills attract oxygen chemically

Quizplus · Accepted Answer

Oxygen diffuses from areas of higher concentration to areas of lower concentration, so it moves from the water (where its concentration is higher) into the blood (where its concentration is lower).

Oxygen Will Diffuse Across Gill Membranes into the Blood Because