Who found that RNA can act as biocatalysts and when?

During the course of evolution why DNA was chosen over RNA as genetic material? Givereasons by first discussing thedesired criteriain a molecule that can act as genetic material and in the light of biochemical differences between DNA andRNA.

The substances, which do NOT act as catalyst but when added to reaction increase the activity of the catalyst are called ________.

Explain how plants can act as bioreactors by using principles of genetic engineering..

Swati, a 26 years old lady, living in a village was physically abused by her in -laws for delivering a baby girl for the second time. When she got pregnant for the third time her husband and in-laws forced her for the prenatal sex determination. Her in-laws got the foetus aborted when tehy found that it was a girl child and blamed her for conceiving a girl child. Based on the given paragraph answer the questions. Scientifically, who is responsible for determining the sex of a child ?

Who first used the term nanotechnology and when?

A substance which can act both as an antiseptic and disinfectant is

Who demonstrated that viruses are inert outsides the host cell and can be crystallised?

Shreyas went to a garden on a wintry morning. When he came back,he found it difficult to breath and started wheezing.What could be the possible condition and how can he be treated?

Which of the following organs can be donated when the donor is alive?

Wilfley's table method for the concentration of an ore can be used when ___________.