Bio-Molecules : Structure and functions and chemistry of some biological Process
Exam Duration: 45 Mins Total Questions : 30
Glucose can be converted to fructose through
- (a)
phenyl hydrazone formation
- (b)
oxime formation
- (c)
osazone formation, subsequent hydrolysis and reduction
- (d)
NONE OF THE ABOVE
Which one of the following hormons contains iodine?
- (a)
tyroxine
- (b)
estrogen
- (c)
adrenaline
- (d)
insulin
The sweetest sugar is
- (a)
sucrose
- (b)
glucose
- (c)
maltose
- (d)
fructose
Interferon is
- (a)
tonic
- (b)
virus
- (c)
carbohydrate
- (d)
hormone
All protein that contain phosphorus is
- (a)
casein
- (b)
egg albumin
- (c)
heamogglobin
- (d)
NONE OF THE ABOVE
Xerosis disease is
- (a)
an eye disease
- (b)
a skin disease
- (c)
a liver disease
- (d)
a lund disease
Vitamin B1 is also known as
- (a)
riboflavin
- (b)
cobalamin
- (c)
thiamine
- (d)
pepsin
Which one of the disease is not caused due to deficiency pf vitamin C?
- (a)
scurvypernicious anaemia.
- (b)
pyorrhoea
- (c)
skin diseases
- (d)
pernicious anaemia
Deficiency of vitiamin B12 causes
- (a)
loss of appetite
- (b)
anaemia
- (c)
pernicious anaemia
- (d)
skin diseases
Deficiency of vitamin D causes
- (a)
anaemia
- (b)
breast cancer
- (c)
lung cancer
- (d)
rickets
Pick out the wrong combination:
- (a)
\(Mg^{ 2+ }\rightarrow \quad photosynthesis\\ \)
- (b)
\(Fe^{ 2+ }\rightarrow \quad Heamoglobin\\ \)
- (c)
\(Se^{ 2+ }\rightarrow \quad Kreb's\quad cycle\\ \)
- (d)
\(CO^{ 2+ }\rightarrow \quad Vitamin\quad B_{ 12 }\\ \)
Which one of the following is not present in RNA?
- (a)
uracil
- (b)
thymine
- (c)
ribose
- (d)
phosphate
The hormone connected with the growth of animals is
- (a)
pepsin
- (b)
pityalin
- (c)
remine
- (d)
thyroxine
Which of the following is not a component of a typical nucleotide
- (a)
a sugar
- (b)
a protein
- (c)
a nitrogen base
- (d)
phosphoric acid
RNA is different from DNA because RNA contains
- (a)
ribose sugar and thymine
- (b)
ribose sugar and uracil
- (c)
deoxyribose sugar and thymine
- (d)
deoxyribose sugar and uracil
A carbohydrate which cannot be hydrolysed to simpler compounds is called
- (a)
monosaccharide
- (b)
disaccharide
- (c)
trisaccharide
- (d)
polysaccharide
Ripe graphs contain
- (a)
glucose
- (b)
fructose
- (c)
sucrose
- (d)
maltose
Which is not a hexose?
- (a)
GlucoseRibose
- (b)
Fructose
- (c)
Ribose
- (d)
Galactose
A Zwittter ion is
- (a)
negatively charged ion without metal atom
- (b)
heavy ion with a small charge on it
- (c)
an ion with positive and negative charge at different points on it
- (d)
a positively charged ion without a metal ion
Hair is composed of protein
- (a)
globulin
- (b)
mucin
- (c)
casein
- (d)
keratin
Each polypeptide in a protein has amino acids linked each other in a specific sequence. This sequence of amino acid is said to be
- (a)
primary structure of proteins
- (b)
secondary structure of proteins
- (c)
tertiary + structure of proteins
- (d)
quarternary structure of proteins
Example of denaturation is
- (a)
curding of milk by bacteria
- (b)
coagulation of egg white on boiling
- (c)
Both (a) and (b)
- (d)
None of the above
Glycogen is a branched chain polymer of \(\alpha -D\)-glucose units in which chain is formed by C1-C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. Structure of glycogen is similar to
- (a)
amylose
- (b)
amylopectin
- (c)
cellulose
- (d)
glucose
In disaccharides, if the reducing groups of monosaccharides i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars. Which of the following disaccharide is a non-reducing sugar?
- (a)
- (b)
- (c)
- (d)
Reaction of glucose with bromine water produces
- (a)
acetic acid
- (b)
saccharic acid
- (c)
glyceraldehyde
- (d)
gluconic acid
Synthesis of each molecule of glucose in photosynthesis involves
- (a)
18 molecules of ATP
- (b)
10 molecules of ATP
- (c)
8 molecules of ATP
- (d)
6 molecules of ATP
Biuret test is not given by
- (a)
carbohydrates
- (b)
polypeptides
- (c)
urea
- (d)
proteins
The two functional groups present in a typical carbohydrate are
- (a)
-OH and -COOH
- (b)
-CHO and -COOH
- (c)
>C=0 and -OH
- (d)
-OH and -CHO