Q. No.
Which of the following organelles contain DNA?
| (i) | Mitochondria |
| (ii) | Chloroplasts |
| (iii) | Golgi bodies |
| (iv) | Ribosomes |
1. (i) and (ii)
2. (ii) and (iii)
3. (i) only
4. (iv) only.
Cell theory was proposed by
1. a botanist
2. a zoologist
3. a botanist and a zoologist
4. a psychologist.
What is a plasmid ?
| 1. | Bacterial, linear, dsDNA |
| 2. | Extra chromosomal linear RNA |
| 3. | Extra chromosomal circular dsDNA |
| 4. | Autonomously replicating circular RNA |
Which one of the following is correct for the transmembrane proteins in lipid bilayer of plasma membrane?
| 1. | They are absent in animal cells. |
| 2. | They act as channel proteins. |
| 3. | They are absent in plant cells. |
| 4. | They are only externally located |
Which of the following is responsible for the mechanical support, protein synthesis and enzyme transport ?
1. Cell membrane
2. Mitochondria
3. Dictyosome
4. Endoplasmic reticulum
Specific proteins responsible for the flow of materials and information into the cell are called
1. membrane receptors
2. carrier proteins
3. integral proteins
4. none of these
What is common between chloroplasts, chromoplasts and leucoplasts ?
1.
Presence of pigments
2.
Possession of thylakoids and grana
3.
Storage of starch, proteins and lipids
4.
Ability to multiply by a fission-like process
Chromatin is made up of:
| 1. | DNA and protein |
| 2. | DNA and histone |
| 3. | DNA, RNA, protein |
| 4. | RNA, histone and oil bodies. |
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