Which of the following is correct statement? [ AIPMT 2001]
37%
a) Starch is a polymer of α-glucose
30%
b) Amylose is a component of cellulose
15%
c) Proteins are composed of only one type of amino acid
19%
d) In cyclic structure of fructose, there are four carbons and one oxygen atom
Q.3.
Which of the following is correct about H-bonding in nucleotide? [ AIPMT 2001]
67%
a) A-T, G-C
29%
b) A-G, T_C
4%
c) G-T, A-C
0%
d) A-A, T_T
Q.4.
Which one of the following gives positive Fehling's solution test? [ AIPMT 2001]
37%
a) Sucrose
48%
b) Glucose
11%
c) Fats
4%
d) Protein
Q.5.
The hormone whiich controls the processeslike burning of fats, proteins and carbohydrates to liberate energy in the body is [ AIPMT 2000]
30%
a) Cortisone
30%
b) throxine
13%
c) adrenaline
26%
d) insulin
Q.6.
α-D-(+)-glucose and β-D-(+)-glucose are [ AIPMT 2000]
61%
a) anomers
4%
b) epimers
35%
c) enantiomers
0%
d) geometrical isomers
Q.7.
Which one of the following has magnesium? [ AIPMT 2000]
9%
a) Vitamin-B12
59%
b) Chlorophyll
23%
c) Haemocyanin
9%
d) Carbonic anhydrase
Q.8.
In DNA, the complementary bases are [ AIPMT 2008]
84%
a) adenine anad thymine, guanine and cytosine
11%
b) uracil and adenine, cytosine and guanine
5%
c) adenine and guanine, thymine and cytosine
0%
d) adenine and thymine, guanine and uracil
Q.9.
the number of molecules of ATP produced in the lipid metabolism of a molecule of palitic acid is ...[ AIPMT 1998]
47%
a) 130
47%
b) 36
6%
c) 56
0%
d) 86
Q.10.
Glucose molecule reacts with 'X' number of molecules of phenyl hydrazine to yield osazone. the value of 'X' is ...[ AIMPT 1998]
27%
a) four
33%
b) one
27%
c) two
13%
d) three
Q.11.
Haemoglobin is [ AIPMT 1997]
17%
a) an enzyme
74%
b) a globular protein
4%
c) a vitamin
4%
d) a carbohydrate
Q.12.
Sucrose in water is dextrorotatory [α]D = +66.4° when boiled with dil. HCL, the solution becomes leavorotatory, [α]D = -39.9°. in this process the sucrose breaks into ...[ AIPMT 1996]
25%
a) L-glucose + D-fructose
15%
b) L-glucose + L-fructose
10%
c) D-glucose + D-fructose
50%
d) D-glucose + L-fructose
Q.13.
The α-D-glucose and β-D-glucose fiffer from each other due to difference in carbon atom with respect to its ...[ AIPMT 1995]
20%
a) conformation
45%
b) configuation
35%
c) number of OH-groups
0%
d) size of hemiacetal ring
Q.14.
The couplings between base units of DNA is through ...[ AIPMT 1992]
72%
a) hydrogen bonding
6%
b) electrostatic bonding
6%
c) covalent bonding
17%
d) van der Waal's forces
Q.15.
On hydrolysis of starch, we finally get [ AIPMT 1991]
32%
a) glucose
11%
b) fructose
53%
c) Both (a) and (b)
5%
d) sucrose
Q.16.
Asserion: Peptide bond is covalent bond Reason: Disulphide bond is formed by two cysteine amino acids
13%
a) amount of adenine (A) is equal to that of cytosine (C) and the amount of thymine (T) is equal to that of guanine (G)
33%
b) amounts of all bases are equal
47%
c) amount of adenine (A) is equal to that of thymine (T) and the amount of guanine (G) is equal to that of cytosine (C)
7%
d) amount of adenine (A) is equal to that of guanine (G) and the amount of thymine (T) is equal to that of cytosine (C)
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