16. How does Amoeba obtain its food? Name the process.
17. Why Doctors advice gargles with salt solution during throat infections?
18. Where are proteins synthesized inside the cell? How is it done in the cell?
19. Name the fluid present in vacuoles. Also write its function.
20. Draw a plant cell and animal cell. (coloured and labeled)
Collect information about any two communicable diseases and present the information in a
folder with illustration, pictures and photographs.
What are communicable diseases? Sign, symptoms, Cure and prevention ?
Answers
Answer:
16- : Amoeba envelops their food through endocytosis or phagocytosis, where the flexibility of the plasma membrane creates pseudopodia. The pseudopodia are the temporary arm-like projection in the amoeba that helps collect nutrition, alter its size and shape, and act as a locomotion organ.
17-Salt water helps neutralise the acids, helping the natural healthy bacteria in our throat to thrive and preventing unwanted bacteria from causing infections. Gargling with warm salt water helps thin out this mucus build-up in the respiratory tract and nasal cavity, thus, allows easy and better clearance.
18- Ribosomes
Ribosomes are the sites in a cell in which protein synthesis takes place. Cells have many ribosomes, and the exact number depends on how active a particular cell is in synthesizing proteins.
19-Vacuole is filled with a liquid called cell sap. The cell sap stores food reserves, pigments, defensive toxins and waste products to be expelled or broken down
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