General Science Questions

The nutrient which provides the maximum energy is Fat. It provides the energy of 9 calories/gram.

 Protein cantaining foods are the major source of dietary sulfur. Foods like eggs are rich in sulfur content.

Here all the options given are important functions of Earth's atmosphere.

Plant cell walls are mostly made up of the molecule cellulose. Cellulose is a polysaccharide, a complex sugar made of long chains of glucose.

The cell wall must be made of thick and strong material as it provides the structural shape of the plant and protection from insects and microorganisms.

Water reabsorption by the renal tubules is harmonally controlled and it is a osmosis mechanism.