Answer: Faster toward the positive electrode.
- A Faster toward the positive electrode
- B Slower
- C In random directions
- D Toward the negative electrode
Correct answer: A. Faster toward the positive electrode
Explanation: DNA is negatively charged and migrates toward the positive pole; smaller fragments migrate faster through the gel matrix.
Two amino acids join via a condensation reaction: the carboxyl -OH of one and an amine -H of the other are eliminated as water, leaving a peptide bond (-CO-NH-) linking them into a dipeptide; repeating this builds a full protein chain.
Concept context
The chemistry of life: carbohydrates, proteins, lipids, nucleic acids, enzymes, and vitamins. Understand their structures, classification, and biological functions. Highly relevant for NEET and Class 12 board exams.