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Biomolecules

194 Questions Start Allen Test
All Exams Allen
Q126 Allen 9. (A) NCERT BASED QUESTIONS MCQ
If $ā€“NH_2$ group and ā€“COOH group are attached on same carbon in any amino acid, then these types of amino acids are known as :
A.
Ī±-AA
B.
Ī²-AA
C.
Ī³-AA
D.
All
Q127 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Variations in amino acids depend on :
A.
Side group
B.
Ester group
C.
Complexity of cell
D.
None of them
Q128 Allen 9. (A) NCERT BASED QUESTIONS MCQ
How many carbon atoms are found in arachidonic acid?
A.
16
B.
18
C.
20
D.
22
Q129 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following AA is basic ?
A.
Valine
B.
Lysine
C.
Glutamic acid
D.
Glycine
Q130 Allen 9. (A) NCERT BASED QUESTIONS MCQ
How many total carbons are found in Palmitic acid?
A.
15
B.
16
C.
17
D.
18
Q131 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Lipid may be :
A.
Monoglyceride
B.
Diglyceride
C.
Triglyceride
D.
All the above
Q132 Allen 9. (A) NCERT BASED QUESTIONS MCQ
image.png This amino acid is :
A.
Serine
B.
Alanine
C.
Glycine
D.
Arginine
Q133 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which functional group is common in fatty acid & amino acid ?
A.
ā€“COOH
B.
$ā€“NH_2$
C.
ā€“OH
D.
All
Q134 Allen 9. (A) NCERT BASED QUESTIONS MCQ
In proteins, amino acids are attached together by :
A.
Peptide bond
B.
Amide bond
C.
Ester bond
D.
Both (1) & (2)
Q135 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Proteins can act as :
A.
transporter of nutrients across cell membrane
B.
Hormones
C.
Enzymes
D.
All
Q136 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following is homopolysaccharide?
A.
Cellulose
B.
Starch
C.
Glycogen
D.
All
Q137 Allen 9. (A) NCERT BASED QUESTIONS MCQ
All the elements present in a sample of earth's crust are also present in a sample of living tissue, but which of the following element is higher in any living organism than in earth's crust?
A.
Hydrogen, Oxygen, Carbon and Silicon.
B.
Hydrogen, Oxygen, Carbon, Nitrogen and Silicon
C.
Hydrogen, Oxygen, Carbon, Nitrogen and Sulphur.
D.
Hydrogen, Oxygen, Carbon, Nitrogen, Sulphur and Sodium
Q138 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Pigments are considered as the secondary metabolites, having some particular functions. Which of the following is an example of pigments?
A.
Carotenoids
B.
Codeine
C.
Concanavalin-A
D.
Curcumin
Q139 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following can not be considered as the example of polymeric substances?
A.
Rubber
B.
Gums
C.
Cellulose
D.
Vinblastin
Q140 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Select the correctly matched.
A.
Anthocyanins - Alkaloids
B.
Carotenoids - Toxins
C.
Ricin - Drugs
D.
Lemon grass oil - Essential oils.
Q141 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following amino acid having H(Hydrogen) as R group?
A.
Glycine
B.
Alanine
C.
Serine
D.
Leucine
Q142 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Physical and chemical properties of amino acids depend on
A.
Amino group
B.
Carboxylic group
C.
R-group
D.
All of the above
Q143 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following represents the structure of Ribose ?
A.
B.
C.
D.
Q144 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Enzymes, which catalyse the transfer of hydrogen (H) between two substrates, are called:-
A.
Transferases
B.
Oxidoreductases
C.
Isomerases
D.
Hydrolases
Q145 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following statements is correct?
A.
All the proteins are enzymes
B.
All enzymes are proteins
C.
Almost all enzymes are proteins
D.
All enzymes are nucleic acids
Q146 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Low temperature preserves the enzyme in a ...'A'... state whereas high temperature destroys enzymatic activity because proteins are ...'B'... by heat. Choose the correct option:-
A.
A = temporarily inactive, B = denatured
B.
A = permanently inactive, B = temporarily inactive
C.
A = permanently inactive, B = denatured
D.
A = denatured, B = temporarily inactive
Q147 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following is not correct?
A.
Catabolic pathways lead to the release of energy
B.
Anabolic pathways consume energy
C.
The living state and metabolism are synonymous
D.
$\mathsf { C O } _ { 2 }$ dissolving in water is an uncatalysed reaction in living systems
Q148 Allen 9. (A) NCERT BASED QUESTIONS MCQ
A general rule of thumb is that rate of enzymatic reactions doubles or decreases by half for every __________change in either direction. Choose correct option for above blank.
A.
$5 0 ^ { \circ }$
B.
$5 \%$
C.
$100 ^ { \circ } C$
D.
$1 0 ^ { \circ } \mathsf { C }$
Q149 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Non proteinaceous part of holoenzyme can be:
A.
metal ion
B.
prosthetic group
C.
Coenzyme
D.
All of the above
Q150 Allen 9. (A) NCERT BASED QUESTIONS MCQ
Which of the following can have catalytic power?
A.
Protein
B.
Nucleic acid
C.
Fat
D.
Both (1) and (2)