Q. No.Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?
1. Lysosome
2. Ribosome
3. Chloroplast
4. Mitochondrion
Select the mismatch.
| 1. | Gas vacuoles — Green bacteria Cells |
| 2. | Large central vacuoles — Animal cells |
| 3. | Protists — Eukaryotes |
| 4. | Methanogens — Prokaryotes |
Select the wrong statement.
| 1. | Bacterial cell wall is made up of peptidoglycan |
| 2. | Pili and fimbriae are mainly involved in motility of bacterial cells |
| 3. | Cyanobacteria lack flagellated cells |
| 4. | Mycoplasma is a wall-less microorganism |
A cell organelle containing hydrolytic enzyme is
1. lysosome
2. microsome
3. ribosome
4. mesosome
Microtubules are the constituents of
| 1. | spindle fibres, centrioles and cilia |
| 2. | centrioles, spindle fibres and chromatin |
| 3. | centrosome, nucleosome and centrioles |
| 4. | cilia, flagella and peroxisomes |
Mitochondria and chloroplast are
| I: | semi-autonomous organelles. |
| II: | formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery. |
| 1. | Il is true but I is false |
| 2. | I is true but ll is false |
| 3. | Both I and I are false |
| 4. | Both I and II are correct |
A complex of ribosomes attached to a single strand of RNA is known as
1. polymer
2. polypeptide
3. okazaki fragment
4. polysome
Which of the following is not a feature of the plasmids?
1. Circular structure
2. Transferable
3. Single-stranded
4. Independent replication
Water soluble pigments found in plant cell vacuoles are
1. chlorophylls
2. carotenoids
3. anthocyanins
4. xanthophylls
Balbiani rings are sites of
| 1. | lipid synthesis |
| 2. | nucleotide synthesis |
| 3. | polysaccharide synthesis |
| 4. | RNA and protein synthesis |
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