Biology Test.4

Most cell membranes are composed principally of ?

The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by ?

Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ?

It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect?

Sodium ions are “pumped” from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of

An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called?

Proteins are made from amino acids by the process of ______________?

Biological sciences have a set methodology and it is based on ?

Which is an organic compound found in most cells ?

A series of hypothesis supported by the results of many tests is called ?

Which are the four most abundant elements in living cells ?

Which one is not correct for a productive theory?

Conclusion of Mendels work latter became a_____________?

Starch is converted into maltose by?

Breeders have developed new and better varieties of food items by using which technique?

Co-enzyme is often formed from ?

Messenger RNA is formed in_________?

Astronauts may use which technique to grow fruits and vegetables ?

Number of chromosomes in E.coli ?

Which statement is incorrect for pasteurization?