Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Explain the difference between Dryopithecus and Ramapithecus animals?

When does DNA replicate in the cell cycle?

Write the name of one fresh water fish and marine fish.

Name the phase all organisms have to pass through before they can reproduce sexually.

How many base pairs are present in one full turn of DNA helix?

Give an example of a somatic hybrid.

Which era is called the golden age of dinosaurs?

Name the socio-biologist who popularised the term biodiversity.

A 30-year old man with a history of no prior immunisation steps on a nail while walking barefoot in his courtyard and bleeds. Which immunisations should he undergo?

Why cannot DNA gain entry into a cell through the plasma membrane?