Question

please answer the question which you know​

Answer 1

2. The small pox vaccine was introduced by Edward Jenner in 1796.

3. The fermentation was discovered by Louis Pasteur.

4. Antibiotics are medicine that fight infections caused by bacteria in humans and animals by either killing the bacteria or making it diffcult for the bacteria to grow and multiply.

5. Those disease which transmits through the Direct or the indirect contact from an infected person to healty person known as communicable diseases.

6. The partial sterilization of a product such as milk or wine, to make it safe for consumption and improves its keeping quantity.

7. Synthetic fibre are fibres made by human through chemical synthetic, as opposed to natural fibre that are directly derived from living organisms.

8. Gene is the unit of transformation inside the cell which controls what a living thing will be like.

9. Prokaryotic cells have not a well-organised nucleus and nuclear membrane. E.g. Blue green algae and bacteria

while eukaryotic cells have a well-organised nucleus and nuclear membrane. E.g. other than blue green algae

10. The process of fusion of male gametes i.e. sperm egg cell from female gamete i.e. ovum egg cell is called fertilization. The product of fertilization is a cell called zygote.

11. Those organism which give birth to their young ones from mother is known as viviparous animals. e.g. human beings and dog

while those organism which give birth to their young ones by laying eggs is called oviparous animals. e.g. birds.

12. The series of complete change from birth to young is called metamorphosis.

Mark as brainliest answer....