Long chain molecules of fatty acids are formed by

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Most of the enzymes get damaged above 40° C
The rate of chemical reaction or decreases by half for every 10°C change in either directio
The enzyme carbonic anhydrase accelerates the rate of hydration of CO₂ by about 10 million times
All of these

Km in enzymatic reaction is

The class of enzymes that catalyze the removal of a group from a substrate without addition of water, leaving double bonds, is

Which of the following is/are essential fatty acid(s)?

Solution

A fatty acid is a polyunsaturated acid which can not be synthesized in the animal body. Therefore it must be supplied with food. Linoleic acid, linolenic acid and arachidonic acids are some examples of essential fatty acids.

Lipids are insoluble in water, because lipid molecules are :

Solution

Lipid is a term used to describe a group of substances in cell, characterized by their solubility in organic solvents such as ether and benzene. These are insoluble in water,because they are hydrophobic.

Phospholipids are :

Solution

Phospholipid (phosphoglyceride) is a bipolar molecule.Its two long fatty acid (tails) represent the hydrophobic end, while the phosphate containing end is hydrophilic end.

Hydrophilic represents the polar groups and hydrophobic represents the non-polar groups. Thus they are called amphipathic in nature.

Phospholipids are important cell membrane constituents, because they :

Solution

Phospholipids are composed of phosphate group and one or more fatty acids. They have hydrophilic (polar)phosphate group and long hydrophobic (non-polar)hydrocarbon ‘tails’. The phospholipids readily form membrane like structure in water.

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What is ture regarding peroxidases and catalases ?

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