MCQ

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Choose the correct statement$/$ statements. Pumps in active transport are:

1. Lipids that bind molecules to pass them through the membrane.
2. Transport molecules uphill.
3. These are specific transporters.
4. These are sensitive to inhibitors.

• A
  $i$ and $iii$
• B
  $i, ii$ and $iv$
• ✓
  $ii, iii$ and $iv$
• D
  $iii$ and $iv$