This set of Vegetables Processing Multiple Choice Questions & Answers (MCQs) focuses on “Secondary Metabolites (Terpenoids, Phenolics, Alkaloids and Sulphur Containing Compounds)”.
1. Which of the following is not secondary metabolite?
a) Fructose
b) Curcumin
c) Vitamin D
d) Thiamine
View Answer
Explanation: Curcumin is not a secondary metabolite. It is a primary bioactive compound. It is obtained from a spice turmeric Curcumin longa. It has anti-inflammatory properties and helps the body in fighting infection.
2. Are antibiotics secondary metabolites?
a) True
b) False
View Answer
Explanation: The example of secondary metabolites is antibiotics. These are intricate chemical constituents that are produced by microorganisms and act against other microorganisms. The capacity of the microorganism to produce further antibiotics can endure for extensive time.
3. What vegetables are high in alkaloids?
a) Onion
b) Tomato
c) Carrot
d) Beans
View Answer
Explanation: Plants which are high in alkaloids are potatoes, tomatoes and peppers. These are the end products of metabolism or waste products. It acts as storage reservoirs of nitrogen. It also acts as protective agents.
4. What are the roles of phenolic compounds?
a) Antioxidants, signal compounds
b) Antioxidants, structural polymers
c) Structural polymers, signal compounds
d) Antioxidants, structural polymers, signal compounds
View Answer
Explanation: Plant phenolic components act as antioxidants and also essential polymers. It is also carotenoids and flavonoids. It creates the signal compounds similar to salicylic acid and flavonoids. It has defense response substances like tannins.
5. Secondary metabolites are used commercially as biologically active compounds.
a) True
b) False
View Answer
Explanation: Secondary metabolites are used as biologically active compounds. They are used in pharmaceuticals, flavors and pesticides industries. These metabolites are large organic molecules. Therefore, it requires a number of specific enzymatic steps for production.
6. What are the classifications of secondary metabolites?
a) Terpenes, phenolic compounds
b) Alkaloids, terpenes
c) Phenolic compounds, terpenes
d) Terpenes, alkaloids and phenolic compounds
View Answer
Explanation: The secondary metabolites are classified into terpenes, alkaloids and phenolic compounds. Terpenes are derived from isopenteyl diphosphate. Alkaloids are derived from amino acids. Phenolic compounds are the flavonoids.
7. In which phase does secondary metabolites are produced?
a) Log phase
b) Lag phase
c) Stationary phase
d) Death phase
View Answer
Explanation: Secondary metabolites are not essential and are not directly involved in growth, development. Secondary metabolites are alkaloids, steroids and antibiotics. These are produced during the stationary phase of the cell growth.
8. Which of the following bioactive compounds are present in tomato?
a) β-carotene
b) Terpenes
c) Phytosterols,
d) Phytosterols and polyphenols
View Answer
Explanation: The tomato fruit comprises β-carotene. It is known for pro-vitamin A activity. It also contains phenolics, carotenoids, vitamins, and glycoalkaloids. Phenolics and carotenoids are the key bioactive compounds present in ripened tomatoes.
9. Which of the following bioactive compounds are present in carrot?
a) Phenolics, carotenoids, polyacetylenes, and ascorbic acid
b) Phenolics and ascorbic acid
c) Phenolics, carotenoids, ascorbic acid
d) Carotenoids, polyacetylenes, and ascorbic acid
View Answer
Explanation: The phenolics, carotenoids, polyacetylenes, and ascorbic acids are the four types of phytochemicals found in carrots. These components can reduce the risk of cancer and heart diseases. It acts as plasma lipid modification, antioxidant and anti-inflammatory.
10. Which of the following bioactive compounds are present in onions?
a) β-carotene
b) Terpenes
c) Phytosterols,
d) Organosulfur compounds
View Answer
Explanation: The onions have organosulfur compounds which includes disulfides, trisulfides. These compounds have a numerous functional property like anticancer and antimicrobial activities. It also contains quercetin.
Sanfoundry Global Education & Learning Series – Vegetables Processing.
To practice all areas of Vegetables Processing, here is complete set of 1000+ Multiple Choice Questions and Answers.
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