Mitochondria, plastids, ribosomes, cytoskeleton, nucleus
Why this is asked: Mitochondria and plastids are the two organelles carrying their own circular DNA and their own 70S ribosomes — the same size class as a bacterial ribosome, not the 80S kind on the rest of the eukaryotic cell's machinery — which is exactly the evidence the endosymbiotic theory is built on.
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From the statements given below choose the correct option:
A. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S.
B. Each ribosome has two sub-units.
C. The two sub-units of the 80S ribosome are 60S and 40S while those of the 70S are 50S and 30S.
D. The two sub-units of the 80S ribosome are 60S and 20S and those of the 70S are 50S and 20S.
E. The two sub-units of the 80S are 60S and 30S and those of the 70S are 50S and 30S.
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Match List I with List II.
List I List II A. Centromere I. Mitochondrion B. Cilium II. Cell division C. Cristae III. Cell movement D. Cell membrane IV. Phospholipid bilayer Choose the correct answer from the options given below:
- •The DNA present in the chloroplast is:
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