Which of the following organelles in a eukaryotic cell can only be seen after staining with vital dye?
1. Mitochondria | 2. Chloroplasts |
3. Nucleus | 4. Endoplasmic reticulum |
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All the following are located in the mitochondrial matrix except:
1. Single circular DNA molecule
2. Proteins of electron transport chain
3. 70 S ribosomes
4. Enzymes of Kreb’s cycle
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A | Inner membrane | Site of location of electron transport chain |
B | Outer membrane | Forms the continuous limiting boundary of the organelle |
C | Cristae | Increase the surface area |
D | Matrix | Site for Kreb’s cycle |
Scientists think that mitochondria may have once been separate living organisms for all of the following reasons except that they
1. have cilia and flagella
2. have their own DNA
3. can reproduce
4. can produce their own proteins
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