Biomolecules Test - 6

Ribulosebisphosphate Carboxylase-Oxygenase (RUBISCO) is the most abundant protein in the whole of the biosphere.

Tertiary structure: Long protein chain is folded upon itself like a hollow woolen ball. Gives a 3-dimensional view of protein, e.g., myosin.

Dietary proteins are the source of essential amino acids. Therefore, amino acids can be essential or non-essential. The latter are those which our body can make, while we get essential amino acids through our diet.

Proteins are molecules made of amino acids. They also play a central role in biological processes. For example,transport molecules such as oxygen, keep us healthy as part of the immune system and transmit messages from cell to cell.

Glut-4 enables glucose transport into cells.

Proteins human haemoglobin consists of 4 subunits. Two of these are identical toeach other. Hence, two subunits of α type and two subunits of β type together constitute the human haemoglobin (Hb).

The ratio of sum of guanine and cytosine to the sum of adenine and thymine is always constant for a species. This is due to formation of hydrogen bonds between purine and pyrimidine.

Protein molecules get denatured due to high temperature, very high or low pH and high energy radiation but there is no effect due to high pressure.

AUG codon is an initiation codon for protein synthesis. This codon code for amino acids methionine.

One full turn of the helical strand would involve ten steps or ten base pairs. The pitch would be 34Å.