The lipid content of the cell membrane mainly consists of:
1. | Phosphoglycerides | 2. | Cholesterol |
3. | Unsaturated fatty acids | 4. | Lipopolysaccharides |
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 |
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 |
Identify the incorrect statement regarding chloroplasts:
1. | They are double membrane bound organelles |
2. | Inner chloroplast membrane is relatively more permeable |
3. | Chlorophyll pigments are present in the thylakoids |
4. | Stroma contains enzymes required for synthesis of carbohydrates and proteins |
Identify the incorrect statement regarding nucleolus:
1. | Their content is continuous with nucleoplasm |
2. | It is site for active rRNA synthesis |
3. | Their number is always one per nucleus |
4. | Larger nucleoli are present in cells actively carrying out protein synthesis |