Question
Who discovered the cell for the first
time?Solution
Robert Hooke first discovered cells in 1665 when he observed cork cells under a microscope. (A) Anton van Leeuwenhoek: he improved the microscope and observed microorganisms. (B) Rudolf Virchow: he proposed that all cells arise from pre-existing cells.
Addition of ethylene dibromide to petrolÂ
What is the ph of lemon juice?
The pH of blood is primarily regulated by:
Which disease is caused by Plasmodium parasite?
`Short-sight' in human eye can be corrected by using proper –
Which of the following methods is suitable for preventing an iron frying pan from rusting?
The joint where the neck joins the head is known as which of the following?
Which of the following is a primary pollutant?
The anther contains
Main function of leaf is