Q. No.The organelle common among prokaryotic and eukaryotic cell is
1. centrosome
2. ribosome
3. peroxisome
4. glyoxysome
Select the wrong statement from the following:
| 1. | both chloroplasts and mitochondria contain an inner and an outer membrane |
| 2. | both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane |
| 3. | both chloroplasts and mitochondria contain DNA |
| 4. | the chloroplasts are generally much larger than mitochondria |
Lysozyme that is present in perspiration, saliva and tears, destroys:
1. certain fungi
2. certain types of bacteria
3. all viruses
4. most virus-infected cells
If a chloroplast of plant is isolated and studied in a test tube the investigation is described
as
1. in vivo
2. in vitro
3. in situ
4. none of these.
Primary cell wall consists of a loose network of cellulose microfibrils impregnated with a matrix of
| 1. | glycoprotein and flavoprotein |
| 2. | hemicellulose and flavoprotein |
| 3. | hemicellulose and pectin |
| 4. | flavoprotein and pectin. |
Which of the following statements regarding mitochondrial membrane is not correct?
| 1. | The outer membrane is permeable to all kinds of molecules |
| 2. | The enzymes of the electron transfer chain are embedded in the outer membrane |
| 3. | The inner membrane is highly convoluted forming a series of infoldings |
| 4. | The outer membrane resembles a sieve |
Which of the following statements regarding cilia is not correct ?
| 1. | The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane |
| 2. | Cilia are hair-like cellular appendages |
| 3. | Microtubules of cilia are composed of tubulin |
| 4. | Cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules |
Which one of the following phenomena is commonly referred as 'cell drinking?
1. Endocytosis
2. Exocytosis
3. Phagocytosis
4. Pinocytosis
Which of the following is not a true subcellular organelle ?
1. Peroxisome
2. Ribosome
3. Chloroplast
4. Lysosome.
An organelle present in all plant cells but absent from those of animals is
1. Mitochondria
2. peroxisome
3. glyoxysomes
4. Centrioles
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