NTA Abhyas NEET2020BotanyCell - The Unit of LifePractice
The type of ribosomes found in the cytoplasm of the organism responsible for causing typhoid and sleeping sickness are _____ and ____, respectively
Options
- A70S and 70S
- B70S and 80S
- C80S and 70S
- D80S and 80S
Correct answer
B. 70S and 80S
Step-by-step solution
Causative organism of typhoid is a bacterium Salmonella typhimurium. It is a prokaryote. The causative organism of sleeping sickness is Trypanosoma which is a protozoan. It is a eukaryote. Ribosomes are the granular structures composed of RNA and proteins. They are not surrounded by any membrane and are seen as dense particles under the electron microscope. Ribosomes found in cytoplasm of eukaryotic organisms are 80S and those in cytoplasm of prokaryotic organisms are 70S, where S is the coefficient of sedimentatio