Multiple choice

Levels of mercury in blood and urine are normally very low. The alga capable of reducing mercury levels in humans is

  1. Palmaria palmata

  2. Ulva lactuca

  3. Chlorella

  4. Chondrus crispus

  5. Aphanizomenon flos-aquae

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorella is very popular in Japan. It is also used as a nutritional supplement with possible effects on the metabolic rate. It can reduce mercury levels in humans by chelation of mercury to the cell wall of the organism.