Biochemistry MCQs Quiz
| Biochemistry entrance exam questions |
MCQ # 01
Rancidity or rancidification of lipids is due to;
a- esterification
b- neutralization
c- saponification
d- oxidation
e- reduction
MCQ # 02
Generally, the B-vitamins are not stored in our bodies. The needed is taken and used by the body while the extra is excreted from our system. Point out the only B-complex vitamin that our bodies can store for years?
a- B1
b- B3
c- B5
d- B9
e- B12
MCQ # 03
Identify the amino acid that is essential for collagen construction and is abundantly found in it?
a- glycine
b- histidine
c- lysine
d- proline
e- tyrosine
MCQ # 04
Cholesterol does not serve as a precursor for one of the following biosynthetic pathways;
a- progesterone synthesis
b- bile salts synthesis
c- triiodothyronine synthesis
d- aldosterone synthesis
e- cortisol synthesis
MCQ # 05
Thyroxine hormone is produced in the thyroid gland from iodine and one of the following amino acids;
a- Tryptophan
b- Tyrosine
c- Threonine
d- Histidine
e- Phenylalanine
MCQ # 06
The carbon chain in the fatty acid called Arachidonic acid consists of how many carbon atoms?
a- 6
b- 12
c- 20
d- 24
e- 30
MCQ # 07
One of the following is an important lipid component of the inner mitochondrial membrane;
a- cardiolipin
b- sphingomyelin
c- phosphatidylserine
d- lecithin
e- phosphatidylinositol
MCQ # 08
Which statement is WRONG about phospholipids?
a- each phospholipid molecule has two fatty acids in its make
b- the head of a phospholipid is hydrophilic
c- the tail of a phospholipid is hydrophobic
d- glycerol is a constituent part of phospholipids
e- each phospholipid molecule has three fatty acids in its make
MCQ # 09
Non-essential fatty acids are those fatty acids that can be synthesized by our body and there's no necessity for intake through diet. Identify the essential fatty acid from among the following?
a- palmitic acid
b- oleic acid
c- arachidic acid
d- linolenic acid
e- stearic acid
MCQ # 10
Which option is INCORRECT about Arachidonic acid?
a- it is a polyunsaturated fatty acid
b- it is pro-inflammatory
c- it is a fatty acid of the omega-6 class
d- linoleic acid is its precursor
e- has 3 double bonds in its chemical structure
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Answer Keys
MCQ # - Correct option
