MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
NEET
NEET Biology MCQ
Neet Biology Biomolecules Mcq
Quiz 18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Q.1
Which one of the following statement about amino acid is incorrect?
0%
a) They are classified on the basis of the 'R' group
0%
b) The structure of almost all amino acids are similar except their 'R' group
0%
c) All protein molecules are a heteropolymer of amino acid
0%
d) They are very important compounds of cytoplasm
Explanation
Answer:(d)
Q.2
Co-enzyme means .... ... [B.H.U. 1997]
0%
a) Metal
0%
b) Vitamin
0%
c) Inorganic compound
0%
d) a & c both
Explanation
Answer:(b)
Q.3
Which one of the following is the major component of chromosome?
0%
a) Nucleic acid
0%
b) Protein
0%
c) Nitrogen base
0%
d) Lipid
Explanation
Answer:(a)
Q.4
The illustration given below is which nitrogen base:
0%
a) Guanine
0%
b) Cytosine
0%
c) Uracil
0%
d) Adenine
Explanation
Answer:(d)
Q.5
The rate of most of enzyme catalyzed reaction changes with pH as the pH Increases this rate?
0%
a) Reaches a maximum
0%
b) Reaches a minimum
0%
c) Decreases
0%
d) Increases
Explanation
Answer:(a)
Q.6
which enzyme would change glucose – 6 phosphate to fructose – 6 phosphate?
0%
a) Transferase
0%
b) Isomerase
0%
c) Lyases
0%
d) glucose phosphatase
Explanation
Answer:(b)
Q.7
A non-protein component of enzyme is called?
0%
a) Co-factor
0%
b) Activator
0%
c) Co-enzyme
0%
d) Inhibitor
Explanation
Answer:(a)
Q.8
A: Conjugated protein are responsible for movements R: Protein become associated with other than amino acids are known as Conjugated protein
0%
a) Both A and R are true and R is the correct explanation of A
0%
b) Both A and R are true but R is not the correct explanation of A
0%
c) A true R false
0%
d) both A and R are false
Explanation
Answer:(d)
Q.9
Enzymes are formed by conjunction of which molecule? [AFMC 1994]
0%
a) Fatty acid
0%
b) glucose
0%
c) amino acid
0%
d) carbon
Explanation
Answer:(c)
Q.10
Generally protein and carbohydrate components are found in cow milk… [KCET 2005]
0%
a) Albumin, Lactose
0%
b) Globulin, Casin
0%
c) Casin, Lactose
0%
d) Casin, Fructose
Explanation
Answer:(c)
Q.11
Maltose are insoluble in... .. [PMT 2000]
0%
a) Water
0%
b) Alcohol
0%
c) Acid
0%
d) Basic
Explanation
Answer:(c)
Q.12
Which is an organic component found in most cells? [DPMT 2009]
0%
a) Glucose
0%
b) Lignin
0%
c) Sodium chloride
0%
d) Oxygen
Explanation
Answer:(a)
Q.13
Given below chemical formula is.... [H PMT 2002] CH3(CH22)7COOH
0%
a) α - ketoglutarate
0%
b) Oxalosuccinet
0%
c) Oleic acid
0%
d) Linolic acid.
Explanation
Answer:(c)
Q.14
Chitin is a ... .. [WB JEE 2010]
0%
a) Polysaccharide
0%
b) Nitrogenous polysaccharide
0%
c) Lipoprotein
0%
d) Protein
Explanation
Answer:(b)
Q.15
The middle Lamella is made up of... .. [CBSE AIPMT 2009]
0%
a) Muramic acid
0%
b) Calcium pectate
0%
c) Phosphoglycerol
0%
d) Hemicellulose.
Explanation
Answer:(b)
Q.16
In a polysaccharide, the individual monosaccharides are linked by a......
0%
a) Glycosidic bond
0%
b) Peptide bond
0%
c) Ester bond
0%
d) Phosphodiester bond
Explanation
Answer:(a)
Q.17
Starch and Cellulose are the compounds made up to many units of ... ..
0%
a) Simple sugar
0%
b) Fatty acid
0%
c) Glycerol
0%
d) Amino acid
Explanation
Answer:(a)
Q.18
Lipids are insoluble in water because lipid molecules are... .. [CBSE PMT 2002]
0%
a) Neutral
0%
b) Zwitter ions
0%
c) Hydrophobic
0%
d) Hydrophillic
Explanation
Answer:(b)
Q.19
Find out the Miss matched pairs:
0%
a) Protein - important compounds of nucleus
0%
b) Nucleic acid - major components of chromosomes
0%
c) Amino acid - an amphoteric compound
0%
d) Enzymes - Colloidal catalysts
Explanation
Answer:(a)
Q.20
The illustration given below is which nitrogen base:
0%
a) Uracil
0%
b) Cytosine
0%
c) Thymine
0%
d) Ribose
Explanation
Answer:(c)
Q.21
Ribonucleoside formed from ribonucleotide while:
0%
a) It made from sugar
0%
b) It made from nitrogen base
0%
c) It made from phosphate
0%
d) a, b, c all above
Explanation
Answer:(c)
Q.22
Nucleic acids were discovered by whom?
0%
a) Crick
0%
b) Wilkinson
0%
c) Meischer
0%
d) Watson
Explanation
Answer:(c)
Q.23
The DNA stands are antiparallel because of:
0%
a) Ester bond
0%
b) Phosphodiester bond
0%
c) Disulphide bond
0%
d) Hydrogen bond
Explanation
Answer:(b)
Q.24
The hydrogen bonds between adenine and guanine are
0%
a) 2
0%
b) 3
0%
c) 1
0%
d) 0
Explanation
Answer:(d)
Q.25
The RNA transporting amino acid to the protein synthesizing site known as
0%
a) t-RNA
0%
b) r-RNA
0%
c) m-RNA
0%
d) Any one of a, b, c
Explanation
Answer:(a)
Q.26
Which of the following is not true for enzyme
0%
a) Water soluble and colloidal in nature
0%
b) Lowers the activation energy level
0%
c) Used up in the biochemical reaction
0%
d) Affected by the change in temperature
Explanation
Answer:(c)
Q.27
Which the following pair regarding to biological importance of carbohydrates is not correctly matched?
0%
a) Cellulose → Forms the plant cell wall.
0%
b) Glycogen → Reserve food in animals.
0%
c) Ribose sugar → Structural components of ATP..
0%
d) Galactose → The most widely used in respiration.
Explanation
Answer:(d)
Q.28
Inorganic catalyst recognized what when it attached an enzyme?
0%
a) Activator
0%
b) Co- enzyme
0%
c) Inhibitor
0%
d) Apoenzyme
Explanation
Answer:(a)
Q.29
Which one of the following pairs is not correctly matched?
0%
a) Triose sugar - DHAP.
0%
b) Starch - amylase and amyloprectin.
0%
c) Phospholipid - plasma membarane.
0%
d) Cortisone - sterols.
Explanation
Answer:(d)
Q.30
Which of the following statements are true? P : Those which have molecular weights 596 Dalton are called micromolecules. Q: Those which have molecular weights 1288 Dalton are called macromolecules. R: Lipids have molecular weight more than ten thousand Dalton and above. S: Biomolecules are of three types (i) micromolecules (ii) simply biomolecules and (iii) macromolecules.
0%
a) P and Q
0%
b) P, Q and R
0%
c) R and S
0%
d) Q and S.
Explanation
Answer:(b)
Q.31
P : The presence of lipid is inevitable for the activity of glucose phosphatase. Q : Copper is co-factor for the activation of enzymes like phosphatase.
0%
a) If both 'A' and 'R' true and 'R' is a correct explanation of’ A’
0%
b) If both 'A' and 'R' true and 'R' is not a correct explanation of’A’
0%
c) If 'A' is true the 'R' is false
0%
d) If 'A' is false the 'R' is true
Explanation
Answer:(c)
Q.32
Which of the following statement regarding the Fatty acid is not correct?
0%
a) Unsaturated fatty acids are two successive carbon atoms at certain places therein are linked by a double bond.
0%
b) Saturated fatty acids are capable of accepting hydrogen or halogen atoms.
0%
c) Butyric acid and palmitic acids are Saturated fatty acids
0%
d) Crotonic acid and oleic acid are Unsaturated fatty acids.
Explanation
Answer:(c)
Q.33
A : Palmitic acids are long chain unsaturated fatty acid. R : Two successive carbon atoms at certain places there in are linked by double bond.
0%
a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
0%
b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
0%
c) Assertion is true but the reason is false.
0%
d) Assertion is false but the reason is True
Explanation
Answer:(c)
Q.34
A : Hydrolysis of a molecule of sucrose yields glucose + fructose. R : Hydrolysis of disaccharide yields two molecules of monosaccharide.
0%
a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
0%
b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
0%
c) Assertion is true but the reason is false.
0%
d) Assertion is false but the reason is True
Explanation
Answer:(a)
Q.35
A : In the structure of wax one molecule of monohydroxy alcohol. R : Lipids such as wax form a protective layer on the outer surface of the aerial plant organs.
0%
a) If both the assertion and the reason are true and the reason is a correct explanation ofthe assertion.
0%
b) If both the assertion and the reason are true and the reason is not a correct explanation of the assertion.
0%
c) Assertion is true but the reason is false.
0%
d) Assertion is false but the reason is True
Explanation
Answer:(b)
Q.36
Which of the following group is not organic group? [AIPMT 2010]
0%
a) Fats, Proteins , Enzymes, Hormones.
0%
b) Co-factors, Hormones, Water, Minerals.
0%
c) Proteins, Carbohydrates, Nucleic acid, Hormones.
0%
d) Proteins, Carbohydrates, Fats, Enzymes.
Explanation
Answer:(b)
Q.37
Which one of the following is incorrect for Protein:
0%
a) They transport some nutrients across cell membrane
0%
b) They are heteropolymer of amino acids
0%
c) They possess C, H, O, N and P in their constitution
0%
d) They are very important compounds of cytoplasm
Explanation
Answer:(c)
Q.38
Find out the one group of amino acids which are related with each other:
0%
a) Valine, Histidine
0%
b) Serine, Tyrosine
0%
c) Glutamate, Proline
0%
d) Lysine, Laucine
Explanation
Answer:(b)
Q.39
Dipeptide means:
0%
a) Two similar amino acids attached by peptide bond
0%
b) Two dissimilar amino acids attached by peptide bond
0%
c) Two similar or dissimilar amino acids attached by peptide bond
0%
d) Two similar or dissimilar proteins attached by peptide bond
Explanation
Answer:(c)
Q.40
Polypeptide means:
0%
a) A polypeptide chain is formed by more than two nucleotides
0%
b) A polypeptide chains is formed by more than two amino acids
0%
c) A polypeptide chains is formed by many similar amino acids
0%
d) A polypeptide chain is formed by many similar nucleotides
Explanation
Answer:(b)
Q.41
Which of the following is correct for the quaternary structure of protein?
0%
a) It represents a three dimensional form of whole protein
0%
b) It forms with interaction between different polypeptide Chain.
0%
c) a and b both
0%
d) It forms the three dimensional arrangement of the atoms within a single polypeptide chain
Explanation
Answer:(c)
Q.42
Which of the following statement is incorrect about immunoglobulin?
0%
a) It has the property of immunity
0%
b) It consist of more than one polypeptide chain
0%
c) It present in blood cell
0%
d) b and c both
Explanation
Answer:(c)
Q.43
Which are the structural units of DNA?
0%
a) Nitrogen base
0%
b) Pentose sugar
0%
c) nucleotide
0%
d) phosphoric acid
Explanation
Answer:(c)
Q.44
What is Ribonucleoside?
0%
a) Ribose + Nucleic acid
0%
b) Ribose + Nitrogen base
0%
c) Ribose + Phosphate
0%
d) Ribose + Adenine
Explanation
Answer:(b)
Q.45
A DNA stand is directly involved in the synthesis of all the following except –
0%
a) Another DNA Stand
0%
b) t- RNA
0%
c) m-RNA
0%
d) Protein
Explanation
Answer:(d)
Q.46
Nucleic acids are polymers of which molecules?
0%
a) Nucleosides
0%
b) Nucleotides
0%
c) Polypeptides
0%
d) polysomes
Explanation
Answer:(c)
Q.47
Which of the following is correct?
0%
a) A=T
0%
b) C=G
0%
c) G=A
0%
d) A=C
Explanation
Answer:(a)
Q.48
Which of the following ratio is constant in the DNA of all the species?
0%
a) A+U / T+C
0%
b) A+G/ C+T
0%
c) A+C / T+G
0%
d) A+T / C+G
Explanation
Answer:(d)
Q.49
Which is longest of all RNA?
0%
a) m-RNA
0%
b) t-RNA
0%
c) r-RNA
0%
d) None above
Explanation
Answer:(a)
Q.50
Which one is known as adapter molecule?
0%
a) DNA
0%
b) m-RNA
0%
c) t-RNA
0%
d) r-RNA
Explanation
Answer:(c)
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page