Which of the following statement about eiliates in incorrect_____________?
Correct answer: D. Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process.Biological Sciences
- A. Contain mainly unicellular organisms.
- B. Their contractile vacoule is respobsible for water regulation.
- C. They are even capable of sexual reproduction.
- D. Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process.Biological Sciences
Explanation
In ciliates, the diploid micronucleus is involved mainly in sexual reproduction, whereas the usually polyploid macronucleus controls metabolism, growth and everyday cell activities. Option d reverses these functions, so students may instead select b if they misunderstand that the contractile vacuole regulates water balance rather than respiration.
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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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