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Biomolecules

194 Questions Start Allen Test
All Exams Allen
Q176 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which of the following is acidic amino acid?
A.
Valine
B.
Glutamic acid
C.
Arginine
D.
Lysine
Q177 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which of the following is aromatic AA?
A.
Tyrosine
B.
Tryptophan
C.
Phenyl alanine
D.
All the above
Q178 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which of the following is component of simple lipid?
A.
Glycerol
B.
Glycol
C.
Fatty acid
D.
Both (1) & (3)
Q179 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
The lipid which is found in cell membrane is
A.
Phospholipid
B.
Lecithin
C.
Both (1) & (2)
D.
Palmitic acid
Q180 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Heterocyclic ring is found in which compound?
A.
N-bases
B.
Ring structure of monosaccharides
C.
Protein
D.
Both (1) & (2)
Q181 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Following structure is related to which AA? COOH Hā€”Cā€”$NH_2$ I $CH_3$
A.
Glycine
B.
Alanine
C.
Serine
D.
Tyrosine
Q182 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Following structure is ā€“
A.
Ī±-Glucose
B.
Ī²-Glucose
C.
Ribose
D.
Deoxyribose
Q183 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which of the following is secondary metabolites?
A.
Rubber
B.
Alkaloids
C.
Terpenoids
D.
All the above
Q184 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which of the following statement is correct?
A.
Lipid is biomacromolecule
B.
Lipid has <1000 daltons molecular weight
C.
Proteins are heteropolymer
D.
All the above are correct except (1)
Q185 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
DNA is ā€“
A.
Biomacromolecule
B.
Acidic in nature
C.
Polymer of nucleotide
D.
All of the above
Q186 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
All the following statements about the structure of glycogen are true, except :-
A.
Branched chains occur, after every ten residues
B.
It is a copolymer of glucose and mannose
C.
It contains $\alpha$ā€“1, 4ā€“glycosidic linkages
D.
It contains $\alpha$ 1, 6ā€“glycosidic linkages
Q187 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
In the following diagrammatic representation A and B is :-
A.
$\mathsf { A } \to \mathsf { G } \mathsf { - } \mathsf { 6 } \mathsf { - } \mathsf { P } , \mathsf { B } \to \mathsf { A } \mathsf { T } \mathsf { P }$
B.
$\mathsf { A } \to \mathsf { A M P } , \mathsf { B } \to \mathsf { A T P }$
C.
$\mathsf { A } \to \mathsf { F r u c t o s e { \mathrm { - } } 6 \mathrm { - } P } , \mathsf { B } \to \mathsf { A T P }$
D.
$\mathsf { A } \to \mathsf { A T P } , \mathsf { B } \to \mathsf { A D P }$
Q188 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Above graph is showing the effect of substrate concentration (S) on enzymatic activity. If due to change in enzymatic activity $\mathsf { K } _ { \mathsf { m } }$ value changes to $\mathsf { K } _ { \mathsf { m } } ^ { \prime }$ then which of the following can be conclude on the basis of this change?
A.
There is a significant increase in enzymatic activity
B.
Entry of positive allosteric modulator in enzymatic activity
C.
Entry of non-competitive inhibitor in enzymatic activity
D.
In enzymatic activity, entry of inhibitor which closely resembles the substrate in its molecular structure
Q189 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
One molecule of enzyme convert 5 molecules of substrate into product in 5 minutes. 20 molecules of substrate and two molecules of enzyme are mixed in a test tube. After 10 minutes the test tube will have :-
A.
products and 10 unreacted molecules of substrate
B.
only products
C.
10 unreacted molecules of substrate, enzymes and products
D.
products and enzymes
Q190 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
The figure given below shows the conversion of a substrate into product by an enzyme. In which one of the four options (1-4) the components of reaction labelled as A, B, C and D are identified correctly? Progress of reaction
A.
A - Transition state, B - Potential energy, C - Activation energy without enzyme, D - Activation energy with enzyme
B.
A - Potential Energy, B - Transition state, C - Activation energy with enzyme, D - Activation energy without enzyme
C.
A - Activation energy with enzyme, B - Transition state, C - Activation energy without enzyme, D - Potential Energy
D.
A - Potential Energy, B - Transition state, C - Activation energy with enzyme, D - Activation energy without enzyme
Q191 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
A.
Enzymes are denatured at high temperatures but in certain exceptional organisms they are effective even at temperatures $8 0 ^ { \circ } - 9 0 ^ { \circ } C$
B.
Enzymes are highly specific
C.
Most enzymes are proteins but some are lipids
D.
Enzymes require optimum pH for maximal activity
Q192 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which one of the following structural formulae of two organic compounds is correctly identified along with its related function ? A B
A.
B : adenine - a nucleotide that makes up nucleic acids
B.
A : Triglyceride - major source of energy
C.
B : Uracil - a component of DNA
D.
A : Lecithin - a component of cell membrane
Q193 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) What do the two axises (x and y) represent ?
A.
x-axis-Enzymatic activity, y-axis-pH
B.
x-axis-Temperature, y-axis-Enzyme activity
C.
x-axis-Substrate concentration, y-axis-Enzymatic activity
D.
x-axis-Enzymatic activity, y-axis-Temperature
Q194 Allen 10. (B) ANALYTICAL QUESTIONS MCQ
Which one out of A - D given below correctly represents the structural formula of the basic amino acid ? image.png
A.
A
B.
B
C.
C
D.
D