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WorksheetsTotal Biomolecules
Total questions: 30
Worksheet time: 24mins
Peptide bonds in proteins can be broken down by the enzyme peptidase. Adrian orders a hamburger and French fries for lunch. He adds cheese and mayonnaise to his hamburger and then sits down to eat lunch with his friends. Which structure would most likely result from the action of peptidase in Adrian’s stomach?
Lipids
Glucose
Nucleic Acid
Amino Acid
Assertion (A) - In solutions of different pH, the structure of amino acids changes
Reason (R) - Presence of ionizable nature of –NH2 and –COOH groups in amino acids
Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
(A) is correct but (R) is incorrect
(A) is incorrect and (R) is correct
Statement 1 - Arachidonic acid has 20 carbon atoms excluding the carboxyl carbon.
Statement 2 - Neural tissues have lipids with more simpler structures.
Statement 1 and Statement 2 both are correct
Statement 1 and Statement 2 both are incorrect
Statement 1 is correct only
Statement 2 is correct only
P- At each step of ascent, the strand of DNA turns 360°.
Q- Pitch of DNA is 3.4 nm.
P and Q both are correct
Q is correct only
P is correct only
P and Q both are incorrect
S 1 - All enzymes are proteins without any exception.
S 2 - Rate of a physical or chemical process refers to the amount of substrate formed per unit time
S 1 and S2 both are incorrect
S 1 and S2 both are correct
S 1 is correct only
S 2 is correct only
Assertion (A) - The Cellulose -I2 is blue in colour
Reason(R) - Cellulose does not contain complex helices and hence cannot hold I2.
Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
A is correct only
R is correct only
Amino acids are not-
Substituted methanes
organic compounds
Inorganic compounds
Structural unit of proteins
identify X and Y in the given protein structure.
X -N-terminal amino acid,
Y- C-terminal amino acid
X -N-terminal amino acid,
Y- N-terminal amino acid
X -C-terminal amino acid,
Y- N-terminal amino acid
X -C-terminal amino acid,
Y- C-terminal amino acid
Q. Match the following polymer with its monomer -
p. Cellulose 1. fructose
q. Chitin 2. amino acid
r. Insulin 3. glucose
s. Inulin 4. NAG
p. 3
q. 4
r. 1
s. 2
p. 4
q. 3
r. 1
s. 2
p. 3
q. 4
r. 2
s. 1
p. 4
q. 3
r. 2
s. 1
Assertion - Amino acids are called alpha amino acids.
Reason -Amino acids contains an amino group and an acidic group as substituents on two different carbon
Assertion and Reason are correct and Reason is the correct explanation of Assertion
Assertion and Reason are correct and Reason is not the correct explanation of Assertion
Both Assertion and Reason are incorrect
Only one is correct
Identify whether the given conditions are anabolic or catabolic
I. Glucose --Lactic acid
II. Amino acids --Proteins
I - catabolic
II - catabolic
I - anabolic
II - catabolic
I - catabolic
II - anabolic
I - anabolic
II - anabolic
S1 - Glycosidic bond and Peptide bond are formed by dehydration.
S 2 - Dietary proteins are the source of essential amino acids.
S 1 and S2 are correct
S 1 and S2 are incorrect
Only S 1 is correct
Only S 2 is correct
Which of the two groups of following formula is involved in peptide bond formation between
different amino acids?
1 and 3
2 and 3
2 and 4
1 and 4
All the statements are incorrect except -
A. Tertiary structure is absolutely necessary for the many biological activities of proteins.
B. The helices of proteins are always left handed.
C. Adult Hemoglobin consists of two subunits only.
D. Proteins are heteropolymers containing strings of amino acids
B and C
A, B and C
C and D
A and D
P. Oils have high melting point than Fats.
Q. Glycogen and Trypsin are polymers having glycosidic bond and peptide bond respectively
Both are correct
Both are incorrect
Only P is correct
Only Q iscorrect
A - Ribose is a hexose monosaccharide
B - The sugar present in polynucleotide is only 2' deoxyribose sugar.
Both are correct
Both are incorrect
Only A is correct
Only B is correct
A DNA double helix consists of 19 % of Cytosine bases. What is the percentage of Thymine nitrogenous base in that DNA?
19 %
38 %
62 %
31 %
Out of 1000 nucleotide 400 have Adenine as nitrogenous base .What is the total no. of Triple bond between G and C ?
400
600
100
50
Read the following statement regarding DNA and select the correct answer
S 1 - Nucleotides are joined together by Phosphodiester linkage between 3' and 5'carbon atoms of the pentose sugar.
S 2 - The bond between phosphate and hydroxyl group of sugar is an ester bond
Both are correct
Both are incorrect
Only S 1 is correct
Only S 2 is correct
1 . Uridine is a nucleoside in which uracil is attached to 2' deoxyribose sugar .
2. The two strands of DNA are antiparallel and non- complementary to each other.
3. Adenylic acid contains adenosine attached to phosphate moiety.
1 and 2 are correct
2 and 3 are correct
Only 1 is correct
Only 3 is correct
T/ F
A. Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) is the most abundant protein in the whole of the biosphere.
B. The chemical and physical properties of amino acids depands on the amino and carboxyl group only.
C. Out of all amino acids Valine is the most simplest neutral amino acid.
A - T
B - F
C- T
A - F
B - F
C- F
A - T
B - T
C- T
A - T
B - F
C- F
Assertion (A)- With increase in Substrate concentration, velocity of enzymatic reaction rises at first but after Vmax , it is not exceeded by any further increase in substrate concentration.
Reason (R)- Enzyme molecules are fewer than the substrate molecules and no free enzyme molecule is left.
(A) and (R) both are true and R is the correct explanation of (A)
(A) and (R) both are true and R is not the correct explanation of (A)
(A) is true only
(R) is true only
A. Enzymes isolated from thermophilic organisms are reported to have thermal stability
B. Transition state formed during an enzymatic reaction is stable and transient
Both are correct
Both are incorrect
A is correct only
B is correct only
For an unknown reaction Km unit is-
As same as that of Vmax/2
As same as of Vmax
As same as of [S]
As same as of time periiod
Which of the following is incorrect statement ?
Every coenzyme is a cofactor and every cofactor is a coenzyme
Every coenzyme is a cofactor but every cofactor is not a coenzyme
Co-enzymes are organic compounds
Vitamins are essential chemical components of many coenzymes.
This is a graph of Exothermic reaction . In the same way Graph of Endothermic reaction can be drawn . Find the incorrect statement regrading Endothermic reaction-
The energy of the product is greater than the energy of the substrate
The energy of the transition state is greater than the energy of the substrate
The energy of the product is greater than the transition state
Transition state is formed which is unstable and transient
In our skeletal muscle , under anaerobic conditions ...........................(a).............................is formed our skeletal Under normal aerobic conditions, ..................(b)...........................is formed. In yeast, during fermentation, the same pathway leads to the production of ..............(c).......................
(a) lactic acid
(b) ethanol
(c) pyruvic acid
(a) lactic acid
(b) pyruvic acid
(c) ethanol
(a) pyruvic acid
(b) ethanol
(c) Lactic acid
(a) pyruvic acid
(b) Lactic acid
(c) ethanol
Assertion - Malonate competes with the Succinate for the active site of the enzyme
Reason - Due to its close structural similarity with the substrate
Both Assertion and Reason are correct and Reason is the correct explanation of Assertion
Both Assertion and Reason are correct and Reason is not the correct explanation of Assertion
Only Assertion is correct
Only Reason is correct
Enzymes catalysing hydrolysis of ester, ether, peptide, glycosidic, C-C, C-halide or P-N bonds.
Transferases
Isomerases
Hydrolases
Lyases
A. Adenine and Thymine are substituted Purines .
B . Flavonoids sounds like alkaloids but they are not secondary metabolites.
C. Ribozymes are nucleic acids with catalytic power.
D. There are 5 types of nucleotides.
A and C are correct
Only C is correct
B , C and D are correct
C and D are correct
