STD 12 - 7. human health and disease — BIOLOGY STD 12 Science — Question

A nucleoside differs from a nucleotide. It lacks the :

During transcription, the DNA site at which RNA polymerase binds is called as:

In human beings the median tube where the uterus opens independently is called

Escherichia coli fully labelled with N15 is allowed to grow in N14 medium. The two strands of DNA molecule of the first generation bacteria have.

Biogeochemical cycling means cycling of:

Given below is a pedigree chart showing the inheritance of a certain sex- linked trait in humans.

The trait traced in the above pedigree chart is

Climax vegetation of a region generally:

The substance produced by a cell in viral infection that can protect other cells from further infection is:

Conservation of organisms in a natural habitat is called:

Which is incorrect statement ?