Dutrochet has given the concept about the cell in:
1. 1834
2. 1814
3. 1822
4. 1824
The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodor Schwann
4. Schleiden
The shorter and longer arms of submetacentric chromosome are referred to as:
1. m-arm and n-arm respectively
2. s-arm and l-arm respectively
3. p-arm and q-arm respectively
4. q-arm and p-arm respectively
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. |
Which of the following organelles does not contain RNA?
1. Plasmalemma
2. Ribosome
3. Chromosome
4. Nucleolus
Animal cells differ from plant cell in possessing:
1. Vacuoles
2. Centrosomes
3. Plastids
4. Mitochondria
Which is substitution of mitochondria in E coli?
1. Golgi body
2. Mesosome
3. Ribosome
4. Glyoxysomes
In prokaryotes, chromatophores are:
1. | specialised granules responsible for the colouration of cells |
2. | structures responsible for organising the shape of the organism |
3. | inclusion bodies lying free inside the cells for carrying out various metabolic activities |
4. | internal membrane systems that may become extensive and complex in photosynthetic bacteria |
Membrane is absent in:
1. | nucleus | 2. | nucleolus |
3. | vacuole | 4. | lysosome |