Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Why is it desirable to use unleaded petrol in vehicles fitted with catalytic converters?

Mark the odd one in the following group.
Har Gobind Khorana, Marshal Nirenberg, Severo Ochoa, Alec Jeffreys.

Define biodiversity.

State the function of filiform apparatus found in mature embryo sac of an angiosperm.

For the expression of traits, genes provide only the potentiality and the environment provides the opportunity. Comment on the veracity of the statement.

What do you understand by transformation?

What is frameshift mutation?

How much of carbon is:

1. Fixed in the biosphere through photosynthesis annually?
2. Dissolved in the ocean?

Mention the two additional processing which hnRNA needs to undergo after splicing so as to become functional.

Name the enzyme that joins the short pieces in the lagging strand during synthesis of DNA?