Explanation

Sauerkraut is a fermented food made from finely shredded cabbage, fermented by lactic acid bacteria.

The fermentation process preserves the cabbage and enhances its flavor and probiotic content.

Explanation

Biofortified wheat is genetically enhanced to contain higher levels of iron and zinc to combat micronutrient deficiencies.

It helps improve nutrition and health, especially in populations with limited access to diverse diets.

Explanation

Isopropyl alcohol is used to precipitate DNA during extraction from sources like bananas or strawberries.

When added to the mixture, DNA becomes visible as it separates out in the cold alcohol layer.

Explanation

The medulla oblongata is the lowest part of the brainstem.

It is directly connected to the spinal cord.

It controls vital involuntary functions like heartbeat, breathing, and blood pressure.

Explanation

Epiphytes grow on large trees to access sunlight but do not harm the host tree or take nutrients from it.

This is an example of commensalism, where one organism benefits and the other is unaffected.

Explanation

Tetanus toxin (produced by Clostridium tetani) affects the nervous system, blocking inhibitory signals to muscles.

This causes sustained and painful muscle contractions.

It is also known as "lockjaw" or spastic paralysis.

Explanation

Processed food is any food that has been changed from its natural state by methods like canning, freezing, or adding preservatives.

These changes are made for safety, shelf-life, and convenience, such as ready-to-eat meals or packaged snacks

Explanation

Sphingomonas is a genus of bacteria being studied for its ability to biodegrade polythene and other plastics efficiently.

Scientists are exploring its potential to shorten plastic degradation from hundreds of years to just a few months.

Explanation

Explanation

Blue green algae (also called cyanobacteria) are prokaryotes, meaning they lack a true nucleus and membrane-bound organelles.

Unlike animals and plants (which are eukaryotes), their DNA floats freely in the cytoplasm.