Answer: Phosphodiester bond.
- A Peptide bond
- B Glycosidic bond
- C Phosphodiester bond
- D Hydrogen bond
Correct answer: C. Phosphodiester bond
Explanation: Phosphodiester bonds link the 3' carbon of one nucleotide to the 5' phosphate of the next, forming the sugar-phosphate backbone of DNA and RNA.
As substrate concentration rises, reaction rate increases steeply at first, then plateaus at Vmax once every enzyme molecule is working at full capacity; Km is the substrate concentration giving half-maximal rate, and a LOWER Km means the enzyme reaches that rate with less substrate (higher affinity).
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.