Which one of the following statements about mycoplasma is wrong?
1. They are also called PPLO
2. They are pleomorphic
3. They are sensitive to penicillin
4. They cause disease in plants
The phrase 'Omnis cellula-e-cellula' was given by:
1. Virchow
2. Pasteur
3. Schleiden
4. Brown
Membrane is absent in:
1. nucleus
2. nucleolus
3. vacuole
4. lysosome
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 |
Which is substitution of mitochondria in E coli?
1. Golgi body
2. Mesosome
3. Ribosome
4. Glyoxysomes
Animal cells differ from plant cell in possessing:
1. Vacuoles
2. Centrosomes
3. Plastids
4. Mitochondria
Which of the following organelles does not contain RNA?
1. Plasmalemma
2. Ribosome
3. Chromosome
4. Nucleolus
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