NURSING ANM AND GNM

NURSING EXAM QUESTIONS

PHARMACOGNOSY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Alkaloids are
A
Primary meabolits
B
Seconday metabolits
C
All the above
D
None of the above
Explanation: 

Detailed explanation-1: -Alkaloids are secondary metabolites originally defined as pharmacologically active compounds, primarily composed of nitrogen (Croteau et al., 2000; Ziegler & Facchini, 2008). They are synthesized from one of the few common amino acids: lysine, tyrosine and tryptophan.

Detailed explanation-2: -Toxins, gibberellins, alkaloids, antibiotics, and biopolymers are examples of secondary metabolites.

Detailed explanation-3: -Plant secondary metabolites are classified by their chemical structure and can be divided into four major classes: terpenes, phenylpropanoids (i.e. phenolics), polyketides, and alkaloids.

Detailed explanation-4: -There are five main classes of secondary metabolites such as terpenoids and steroids, fatty acid-derived substances and polyketides, alkaloids, nonribosomal polypeptides, and enzyme cofactors [6].

There is 1 question to complete.