Which of the following statements about inclusion bodies is incorrect?
1. | These are involved in the ingestion of food particles. |
2. | They lie freely in the cytoplasm. |
3. | These represent reserve material in cytoplasm. |
4. | They are not bound by any membrane. |
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?
1. | Peroxisomes | 2. | Golgi bodies |
3. | Polysomes | 4. | Endoplasmic reticulum |
Inclusion bodies of blue-green, purple, and green photosynthetic bacteria are:
1. Contractile vacuoles
2. Gas vacuoles
3. Centrioles
4. Microtubules
The biosynthesis of ribosomal RNA occurs in:
1. Ribosomes
2. Golgi apparatus
3. Microbodies
4. Nucleolus
The size of Pleuro Pneumonia Like Organism (PPLO) is:
1. 0.02 m
2. 1-2 m
3. 10-20 m
4. 0.1 m
Match the following columns and select the correct option:
Column-I | Column-II | ||
(a) | Smooth endoplasmic reticulum |
(i) | Protein synthesis |
(b) | Rough endoplasmic reticulum |
(ii) | Lipid synthesis |
(c) | Golgi complex | (iii) | Glycosylation |
(d) | Centriole | (iv) | Spindle formation |
Options: | (a) | (b) | (c) | (d) |
1. | (ii) | (i) | (iii) | (iv) |
2. | (iii) | (i) | (ii) | (iv) |
3. | (iv) | (ii) | (i) | (iii) |
4. | (i) | (ii) | (iii) | (iv) |
Match column I with column II.
Column I | Column II | ||
(a) | Golgi apparatus | (i) | Synthesis of protein |
(b) | Lysosomes | (ii) | Trap waste and excretory products |
(c) | Vacuoles | (iii) | Formation of glycoproteins and glycolipids |
(d) | Ribosomes | (iv) | Digesting biomolecules |
Choose the right match from the options given below:
Options: | (a) | (b) | (c) | (d) |
1. | (iii) | (iv) | (ii) | (i) |
2. | (iv) | (iii) | (i) | (ii) |
3. | (iii) | (ii) | (iv) | (i) |
4. | (i) | (ii) | (iv) | (iii) |
Which of the following nucleic acids is present in an organism having 70 S ribosomes only?
1. | Single-stranded DNA with a protein coat |
2. | Double-stranded circular naked DNA |
3. | Double-stranded DNA enclosed in nuclear membrane |
4. | Double-stranded circular DNA with histone proteins |
Non-membranous nucleoplasmic structures in the nucleus, are the sites for active synthesis of:
1. | protein | 2. | mRNA |
3. | rRNA | 4. | tRNA |
Which one of the following cellular parts is correctly described?
1. | Centrioles - sites for active RNA synthesis |
2. | Ribosomes - those on chloroplasts are larger (80s) while those in the cytoplasm are smaller (70s) |
3. | Lysosomes - optimally active at a pH of about 8.5 |
4. | Thylakoids - flattened membranous sacs forming the grana of chloroplasts |