Lime stone deposits are formed from__________?
Correct answer: B. Foraminferans
- A. Zooflagellates
- B. Foraminferans
- C. Aetinopods
- D. Apicomplexans
Explanation
Foraminiferans have calcium carbonate shells, and the accumulated shells and remains of these organisms contribute substantially to limestone deposits. Actinopods may have mineral-like skeletons, but their deposits are not the main source referred to here.
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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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