The famous aphorism ‘omniscellula-e-cellula’ was added to the cell theory in 1855 by
1. | Matthias Shcleiden | 2. | Theodore Schwann |
3. | J. B. S. Haldane | 4. | Rudolph Virchow |
A basal body is a part of bacterial:
1. | Inclusion bodies | 2. | Chromosomal DNA |
3. | Flagellum | 4. | Plasmid |
Identify the incorrect statement regarding bacterial ribosomes:
1. They are associated with plasma membrane
2. They are 70 S with two subunits being 30 S and 40 S
3. Several ribosomes may attach to a single mRNA
4. They translate the mRNA into proteins
Reserve materials in prokaryotic cells are stored in the cytoplasm in the form of:
1. | Non-membrane bound lysosomes | 2. | Gas vacuoles |
3. | Chromatophores | 4. | Inclusion bodies |
Which of the following is absent in almost all plant cells?
1. | Plastid | 2. | Cell wall |
3. | A large central vacuole | 4. | Centriole |
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 |