Which of the protozoa has a striking resemblance to collar cells in sponges_____________?
Correct answer: B. Choanflagellates
- A. Zooflagellates
- B. Choanflagellates
- C. Trypanosomoa
- D. Trichonymphas
Explanation
Choanoflagellates possess a collar of microvilli surrounding a flagellum, closely resembling the choanocytes, or collar cells, of sponges. Trypanosoma and Trichonympha have flagella but lack this distinctive collar arrangement, so students may select a by treating all flagellated protozoa as similar.
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About Classification of Biological Molecules
Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.
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