Plasmodesmata are:
1. | lignified cemented layers between cells |
2. | locomotory structures |
3. | membranes connecting the nucleus with plasmalemma |
4. | connections between adjacent cells |
The cytoskeleton is made up of:
1. | calcium carbonate granules |
2. | callose deposits |
3. | cellulosic microfibrils |
4. | proteinaceous filaments |
1. | several ribosomes attached to a single mRNA |
2. | many ribosomes attached to a strand of endoplasmic reticulum |
3. | a ribosome with several subunits |
4. | ribosomes attached in a linear arrangement |
1. | is membrane-bound and contains storage proteins and lipids |
2. | is membrane-bound and contains water and excretory substances |
3. | lacks membrane and contains air |
4. | lacks membrane and contains water and excretory substances |
Which one of the following is not a constituent of the cell membrane?
1. Cholesterol
2. Glycolipids
3. Proline
4. Phospholipids
Select the wrong statement from the following:
1. | Both chloroplast 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. |
The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodor Schwann
4. Schleiden
Which of the following pair of organelles does not contain DNA?
1. | Nuclear envelope and Mitochondria |
2. | Mitochondria and Lysosomes |
3. | Chloroplast and Vacuoles |
4. | Lysosomes and vacuoles |
Which of the following statements is not correct?
1. | Lysosomes are formed by the process of packaging in the endoplasmic reticulum. |
2. | Lysosomes have numerous hydrolytic enzymes |
3. | The hydrolytic enzyme of lysosomes are active under acidic pH |
4. | Lysosomes are membrane bound structure. |
Middle lamella is mainly composed of:
1. hemicellulose
2. muramic acid
3. calcium pectate
4. phosphoglycerides