Match the following column I and II for organismic respiration.
Column I | Column II |
A. Respiration in bacteria | 1. Mitochondria |
B. Respiration in cyanobacteria | 2. Cytoplasmic membrane |
C. Respiration in eukaryotic cell | 3. Mesosomes |
A-2, B-3, C-1
A-3, B-2, C-1
A-1, B-3, C-2
A-3, B-1, C-2
Ribosomes are particles about 200 Å units in diameter consisting of protein and RNA. The percentage of protein and RNA is respectively
80% and 20%
60% and 40%
50% and 50%
40% and 60%
Which of the following sequences represent a possible pathway in the production of a secretory protein?
Rough ER → Secretory vesicle → Ribosome → Golgi apparatus
Ribosome → Rough ER → Golgi apparatus → Secretory vesicle
Secretory vesicle → Golgi apparatus → Ribosomes → Rough ER
Rough ER → Ribosomes → Secretory vesicles → Golgi appratus
In prokaryotes, chromatophores are
Specialised granules responsible for the colouration of cells
Structures responsible for organising the shape of the organism
Inclusion bodies lying free inside the cells for carrying out various metabolic activities
Internal membrane systems that may become extensive and complex in photosynthetic bacteria
The vacuole is lined by a membrane called
tonoplast
jacket
cell membrane
tonoplasm
A.
tonoplast
The vacuole is lined by a membrane called tonoplast.
Jacket layer is present around archegonia and antheredia in bryophytes.
Tonoplasm is the content or liquid present inside the vacuole enclosed by a tonoplast membrane.
Cell membrane is the semi- permeable membrane enclosing the protoplasmic material of a cell.
Who for the first time developed electron microscope?
Knoll and Ruska
Rudolf and Kolliker
Robert Hooke
Swanson