Biochemistry Test 03

Total Questions: 22

2 - A bond formed between two amino acids is:

A ) peptide linkage ✅
B ) covalent bond
C ) hydrogen bond
D ) glycosidic linkage

3 - The nature of enzymes is:

A ) vitamin
B ) Protein ✅
C ) Carbohydrate
D ) fats

4 - When bones are heated they give:

A ) starch
B ) gelatin ✅
C ) fats
D ) Oils

5 - The building blocks of lipids are:

A ) Fatty acids ✅
B ) Carboxylic acids
C ) Mineral acids
D ) Alcohols

6 - Oils and fats are esters of long chain fatty acids with:

A ) glycogen
B ) glucose
C ) starch
D ) glycerol ✅

7 - Oils are triglycerides of ----- fatty acids:

A ) unsaturated ✅
B ) saturated
C ) both of these
D ) none of these

8 - Margarine is produced by adding hydrogen to vegetable oil at:

A ) 2000°C
B ) 100°C
C ) 200°C ✅
D ) 1000°C

9 - Rancid butter has:

A ) foul smell ✅
B ) rotten egg smell
C ) pungent smell
D ) no smell

10 - Smell of rancid butter is due to the presence of:

A ) propanoic acid
B ) butanoic acid
C ) acetic acid
D ) citric acid

11 - Methyl butanoate smells like:

A ) apple ✅
B ) mango
C ) lemon
D ) grapes

12 - Ethyl butanoate smells like:

A ) apple
B ) lemon
C ) pineapple ✅
D ) melon

13 - Nucleic acid are made up of long chains of:

A ) nucleotides ✅
B ) fatty acids
C ) amino acids
D ) none of these

14 - Which scientist discovered the structure of DNA?

A ) Watson & Crick ✅
B ) Hopkins
C ) John Dalton
D ) Robert Hooke

15 - RNA consists of:

A ) ribose sugar
B ) pentose sugar ✅
C ) hexoses
D ) trioses

16 - Synthesis of protein is directed by:

A ) DNA ✅
B ) RNA
C ) both a and b
D ) none of the above

17 - Vitamin B1 was discovered by:

A ) Funk ✅
B ) Hopkins
C ) Crick
D ) Watson

18 - The accumulation of which vitamin causes bone -like deposits in the kidney:

A ) Vitamin D ✅
B ) Vitamin E
C ) Vitamin B
D ) Vitamin A

20 - Which is a hereditary material?

A ) DNA ✅
B ) RNA
C ) Protein
D ) All of these

21 - Denaturing of protein is caused by:

A ) heating
B ) changing
C ) both a and b
D ) none of these

22 - White viscous fluid (albumen) present in an egg is:

A ) protein ✅
B ) fat
C ) vitamin
D ) carbohydrate