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Q: Which membrane bound organelle, often referred to as the powerhouse of the cell because it is responsible for the formation of cell's main energy carrying molecule adenosine triphophate (ATP), was first discovered in 1857?
  • A. Mitochondria
  • B. Smooth Endoplasmic Reticulum
  • C. Vacuoles
  • D. Ribosome
Correct Answer: Option A - Mitochondria were discovered by Albert von Kolliker in 1857 in insect muscle cells. They are known as the powerhouse of the cell because they generate ATP, which is used as a source of chemical energy. Mitochondria are double-membraned organelle. Outer membrane is smooth and inner membrane is folded into structures called cristae.
A. Mitochondria were discovered by Albert von Kolliker in 1857 in insect muscle cells. They are known as the powerhouse of the cell because they generate ATP, which is used as a source of chemical energy. Mitochondria are double-membraned organelle. Outer membrane is smooth and inner membrane is folded into structures called cristae.

Explanations:

Mitochondria were discovered by Albert von Kolliker in 1857 in insect muscle cells. They are known as the powerhouse of the cell because they generate ATP, which is used as a source of chemical energy. Mitochondria are double-membraned organelle. Outer membrane is smooth and inner membrane is folded into structures called cristae.