Q. No.The approximate percent composition of proteins and lipids in the cell membrane of an erythrocyte is respectively:
1.
52% and 40%
2.
40% and 52%
3.
60% and 40%
4.
40% and 60%
The measure of fluidity of a cell membrane is:
| 1. | the ability of proteins to flip-flop between the two layers of phospholipids |
| 2. | the ability of proteins to move laterally within the membrane |
| 3. | the ability of lipids to flip-flop between the two layers of phospholipids |
| 4. | the ability of lipids to move laterally within the membrane |
The endo-membrane system of a eukaryotic cell includes:
| 1. | Lysosomes | 2. | Peroxisomes |
| 3. | Mitochondria | 4. | Chloroplasts |
Which of the following statements would not be applicable to the rough endoplasmic reticulum in a eukaryotic cell?
| 1. | Frequently observed in cells actively involved in protein synthesis and secretion |
| 2. | Bear ribosomes on their surface |
| 3. | Continuous with the outer membrane of the nucleus |
| 4. | Sites of synthesis of steroidal hormones |
The number of correct statements regarding Golgi apparatus amongst the given statements will be:
| I: | The concave trans surface is the maturing face. |
| II: | The cis and trans faces are entirely different but interconnected. |
| III: | It remains in close association with the endoplasmic reticulum. |
| IV: | Site of formation of glycoproteins and glycolipids. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Acid hydrolases are found in a single membrane bound organelle called:
| 1. | Glyoxysome | 2. | Lysosome |
| 3. | Peroxisome | 4. | Ribosome |
A single membrane, tonoplast, binds the:
| 1. Inclusion bodies | 2. Polysomes |
| 3. Vacuoles | 4. Lysosomes |
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 |
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
The types of plastids that store oils and fats are:
| 1. | Leucoplasts | 2. | Amyloplasts |
| 3. | Elaioplasts | 4. | Aleuroplasts |
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