Difference between eukaryotes and prokaryotes is in:
1. | Circular ss DNA in prokaryotes |
2. | Histone with prokaryotic DNA |
3. | Operon in eukaryotes |
4. | Membrane bound organelles in eukaryotes |
Double unit membrane is absent in:
1. Ribosomes
2. Nucleus
3. Plastids
4. E.R
The main arena of various types of activities of a cell is:
1. | Plasma membrane | 2. | Mitochondria |
3. | Cytoplasm | 4. | Nucleus |
Different cells have different sizes. Given are the following cells:
I. | Mycoplasma |
II. | Ostrich eggs |
III. | Human RBC |
IV. | Bacteria |
The correct ascending order of the size of the cells given above will be:
1. | I, IV, III, II | 2. | I, I, III, IV |
3. | II, I, III, IV | 4. | III, II, I, IV |
Statement I: | Mycoplasma can pass through less than 1 micron filter size. |
Statement II: | Mycoplasma are bacteria with cell walls. |
The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodor Schwann
4. Schleiden
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 structure is not found in a prokaryotic cell?
1. Nuclear envelope
2. Ribosome
3. Mesosome
4. Plasma membrane
Which of the following is not membrane-bound?
1. Vacuoles
2. Ribosomes
3. Lysosome
4. Mesosomes
Cellular organelles with membranes are:
1. | Nucleus, ribosome and mitochondria |
2. | Chromosomes, ribosomes and endoplasmic reticulum |
3. | Endoplasmic reticulum, ribosome and nuclei |
4. | Lysosomes, Golgi apparatus and mitochondria |