The difference in gram ⊕ and gram bacteria is due to:
| 1. | Cell wall | 2. | Cell membrane |
| 3. | Ribosome | 4. | Cytoplasm |
Extranuclear chromosomes occur in:
| 1. | Peroxisome and ribosome | 2. | Chloroplast and mitochondria |
| 3. | Mitochondria and ribosome | 4. | Chloroplast and lysosome |
Element necessary for the middle lamella:
1. Ca
2. Zn
3. K
4. Cu
Microtubules are absent in:
1. Mitochondria
2. Flagella
3. Spindle fibers
4. Centriole
Chromosomes in a bacterial cell can be 1–3 in number and:
| 1. | Are always circular |
| 2. | Are always linear |
| 3. | Can be either circular or linear, but never both within the same cell |
| 4. | Can be circular as well as linear within the same cell |
Lysosome contains:
| 1. | Oxidative enzymes | 2. | Hydrolytic enzymes |
| 3. | Reductive enzymes | 4. | Anabolic enzymes |
Extranuclear DNA is found in:
| 1. | Lysosome and chloroplast |
| 2. | Chloroplast and mitochondria |
| 3. | Mitochondria and lysosome |
| 4. | Golgi and E.R. |
Which of the following ribosomes are engaged in protein synthesis in the animal cell:
| 1. | Ribosomes that occur on the nuclear membrane and E.R. |
| 2. | Ribosomes of only cytosol |
| 3. | Ribosomes of only nucleolus and cytosol |
| 4. | Ribosomes of only mitochondria and cytosol |
The mitotic spindle is mainly composed of which protein:
1. Actin
2. Tubulin
3. Actomyosin
4. Myoglobin
Ribosomes are produced in:
1. Nucleolus
2. Cytoplasm
3. Mitochondria
4. Golgibody