Chemistry Class 10th
241. Proteins are polymers of:
A) Carbohydrates
B) Amino acids
C) Fatty Acid
D) Minerals
242. Proteins are complex _________ substances.
A) Halide
B) Sulphuric
C) Nitrogenous
D) None of the above
243. About 50-55% of the dry weight of cells is:
A) Carbohydrates
B) Proteins
C) Lipids
D) Minerals
244. Proteins also contain traces of:
A) Nickel
B) Sulpher
C) Ammonia
D) None of the above
245. Proteins are joined together by:
A)Glyceric Linkage
B) Peptide Links
C) Ionic bonding
D) Covalent Bonding
246. Proteins contain:
A) NH2
B) COOH
C) Both A and B
D) None of the above
247. There are ______ different types of amino acid groups:
A) 10
B) 13
C) 20
D) 24
248. There are ______ essential amino acids.
A) 10
B) 13
C) 20
D) 24
249. Additional _______ reactions lengthen the chain and produce polypeptide chain.
A) Sublimation
B) Condensation
C) Reduction
D) Addition
250. Which of the following type of bonding occurs in protein molecules:
A) Peptide Bonding
B) Hydrogen Bonding
C) Disulphide Bonding
D) All of the above
251. Each amino acid has a side chain designated by:
A) A
B) F
C) R
D) H
252. Disulphide bridges are only in sulpher containing protein molecules
A) True
B) False
253. Which of the following is not the use of Protein:
A) Oxygen Carrier
B) Body Structure helper
C) Primary Energy Source
D) Body defense system
254. Lipose means:
A) Grease
B) Fatty
C) Long Complex Chains
D) None of the above
255. Lipids are not soluble in water:
A) True
B) False
256. Lipid can not be dissolved in which of the following:
A) Benzene
B) Chloroform
C) Water
D) Ether
257. Steroids are a type of:
A) Lipid
B) Protein
C) Carbohydrate
D) Mineral
258. Lipids are classified into _____ types:
A) 2
B) 3
C) 4
D) None
259. Simple lipids are also known as:
A) Phospholipids
B) Triglycerides
C) Glycolipids
D) Sulpholipids
260. Oils and Fats are simple lipids:
A) True
B) False