NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Waxes are used by plants and animals to contain moisture.
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Wax acts as a protective coating on the epidermis of leaves, stems, and fruits, reducing desiccation or abrasion, or resisting pest attack. The wax coating on the fruit of several species of native bayberry (Myrica cerifera) have been traditionally used to make candles.

Detailed explanation-2: -The best-known animal wax is beeswax used in constructing the honeycombs of beehives, but other insects also secrete waxes. A major component of beeswax is myricyl palmitate which is an ester of triacontanol and palmitic acid.

Detailed explanation-3: -Plant waxes are generally the waterproofing components found in an amorphous layer on the outer surface of the plants. They are essential for plants as barrier protection against environmental stress.

Detailed explanation-4: -Waxes are esters of long chain fatty acids and long chain alcohols. They form a water insoluble coating. They are found in beeswax, cerumen or earwax.

There is 1 question to complete.