Q44.Match List I with List II
List I
A. Smooth endoplasmic reticulum
B. Rough endoplasmic reticulum
C. Lysosome
D. Mitochondria
List II
I. Protein synthesis
II. Detoxification
III. Oxidative phosphorylation
IV. Intracellular digestion
Choose the correct answer from the options given below :
(1) A-II, B-I, C-IV, D-III
(2) A-I, B-II, C-III, D-IV
(3) A-II, B-III, C-I, D-IV
(4) A-I, B-IV, C-II, D-III
Correct Answer: (1) A-II, B-I, C-IV, D-III
Cell organelles have specialized functions critical for cellular processes, with smooth ER handling detoxification, rough ER managing protein synthesis, lysosomes performing intracellular digestion, and mitochondria conducting oxidative phosphorylation.
Definitions
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Smooth endoplasmic reticulum (A): Lacks ribosomes; specializes in lipid synthesis, detoxification of drugs/toxins, and calcium storage (II).
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Rough endoplasmic reticulum (B): Ribosome-studded; primary site for protein synthesis and modification before transport to Golgi (I).
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Lysosome (C): Membrane-bound sacs containing hydrolytic enzymes for breaking down waste materials, pathogens, and cellular debris (IV).
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Mitochondria (D): Powerhouses performing oxidative phosphorylation via electron transport chain to produce ATP (III).
Option Analysis
Master smooth endoplasmic reticulum rough endoplasmic reticulum lysosome mitochondria function matching for cell biology exams. Correct option (1) perfectly pairs detoxification (II), protein synthesis (I), intracellular digestion (IV), and oxidative phosphorylation (III).
Organelle Functions Decoded
Smooth ER detoxifies drugs and synthesizes lipids (II)—abundant in liver cells.
Rough ER hosts ribosomes for protein synthesis (I)—key for secretory cells.
Lysosomes digest engulfed materials using acid hydrolases (IV)—”cellular stomachs.”
Mitochondria generate ATP through oxidative phosphorylation (III)—energy factories.
Why Option 1 Dominates
Each pairing reflects textbook organelle specialization: SER’s smooth lipid/detox role vs RER’s ribosome-studded protein factories, lysosomes as digestive organelles, mitochondria as ATP producers. Other options confuse synthesis sites with energy production.
Exam Memory Hack
“Smooth = Detox/Steroids (II), Rough = Ribosomes/Protein (I), Lysosomes = Lunch digesters (IV), Mitochondria = Muscle power (III).” Visualize: smooth tubes (detox), bumpy tubes (protein), acid sacs (digestion), double-membrane factories (ATP).
