Question

multiple choice question
a polymer of galactose and sulfur - containing carbohydrates derived from seaweeds, is commonly used in the laboratory to prepare solid culture media.

chitin
cellulose
agar
peptidoglycan

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Explanation:

Agar is a polymer of galactose and sulfur - containing carbohydrates derived from seaweeds and is commonly used to prepare solid culture media in the laboratory. Chitin is a different polysaccharide mainly in arthropod exoskeletons. Cellulose is a major component of plant cell walls. Peptidoglycan is in bacterial cell walls.

Answer:

C. Agar