Which cell organelle is known as the 'powerhouse of the cell'?
Answer and explanation
Correct answer: C. Mitochondria
- Step 1: Cellular respiration generates adenosine triphosphate (ATP), the primary biochemical energy currency of the cell.
- Step 2: Mitochondria carry out the citric acid cycle and oxidative phosphorylation across their folded inner membranes (cristae) to produce the majority of cellular ATP.
- Step 3: Other organelles have distinct functions: ribosomes synthesize proteins, lysosomes digest cellular debris, and the Golgi apparatus packages macromolecules.
Answer
Mitochondria.
Why not the others: Lysosome contains acid hydrolases for intracellular degradation and waste digestion; Ribosome is the site of mRNA translation and protein synthesis; Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery.
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