Asked in FBISE Chemistry 2023 — Paper 1 2023Moderate

To what category of molecules do enzymes belong?

Correct answer: B. Proteins

  • A. Carbohydrates
  • B. Proteins
  • C. Lipids
  • D. Fats

Explanation

Proteins are large, complex molecules composed of amino acids. They play a crucial role in almost all biological processes, serving as enzymes, structural components, hormones, and antibodies, among other functions. Enzymes are a type of protein that act as biological catalysts, speeding up chemical reactions without being consumed in the process.

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About Enzymes as Biocatalysts

Enzymes are protein or RNA biocatalysts that lower activation energy without being consumed, and their active sites bind specific substrates. The topic covers the lock and key and induced fit models, effects of temperature, pH and substrate concentration, cofactors, enzyme specificity, and competitive versus non-competitive inhibition.

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