Question

Write a name of a synthetic fibre?
What are lubricant?
Write a few lines about amoeba?
What is menstrual cycle?

Answer 1

Answer:

1. Nylon, Rayon

2. A lubricant is a substance, usually organic, introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move.

3. An amoeba, sometimes written as "ameba", is a term generally used to describe a single celled eukaryotic organism that has no definate shape and that moves by means of pseudopodia. Pseudopodia or pseudopods are temporary projections of the cell and the word literally means "false feet".

4. The menstrual cycle is the regular natural change that occurs in the female reproductive system that makes pregnancy possible. The cycle is required for the production of oocytes, and for the preparation of the uterus for pregnancy. The menstrual cycle occurs due to the rise and fall of hormones

Answer 2

Answer:

1. Polyester
2. Lubricant is a substance used to reduce friction between surface of mutual contact.
3. Amoeba is an bacteria having pseudopodia or false feet which is used to capture food and eat it.
4. Menstrual cycle involves series of cyclic changes occurring in ovaries and female reproductive tract during reproductive period of female.