Multiple Choice
Which of these groups is characterized by cells that have more than one nucleus?
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27. Protists
Eukaryotic Supergroups: Exploring Protist Diversity
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Which of the following organisms is commercially harvested to extract algin from their cell walls?
A
Dinoflagellates
B
Golden algae
C
Marine green algae, such as Ulva
D
Diatoms
E
Brown algae
Verified step by step guidance1
Understand the context: Algin is a polysaccharide found in the cell walls of certain algae. It is used commercially as a thickening and stabilizing agent in various products.
Identify the organism group: Algin is specifically extracted from the cell walls of brown algae, which are part of the Phaeophyceae class.
Differentiate between algae types: Brown algae are distinct from other algae such as dinoflagellates, golden algae, marine green algae, and diatoms in terms of their cell wall composition.
Recognize the commercial importance: Brown algae, such as kelp, are harvested for algin due to their abundance and the ease of extraction of this compound.
Conclude with the correct organism: Based on the information, brown algae are the organisms commercially harvested for algin extraction.
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