Download PDF
Free download in PDF Class 12 Chemistry Chapter 14 Biomolecules Very Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
The segment of DNA which acts as the instrumental manual for the synthesis of the protein is
[A]
nucleotide
[B]
ribose
[C]
gene
[D]
nucleoside
(2)
On hydrolysis of starch, we finally get
[A]
glucose
[B]
fructose
[C]
Maltose
[D]
Both 1 and 3
(3)
Which monomer unit after polymerization forms proteins?
[A]
Monosaccharides
[B]
Nucleotides
[C]
Fatty acids
[D]
Amino acids
(4)
Number of fatty acid residues found in one molecule of fat is:
(5)
An enzyme that brings about structural changes of a compound without altering its molecular weight is:
[A]
Diastase
[B]
Ligase
[C]
Lyase
[D]
Isomerase
(6)
Which is the most abundant enzyme on the earth?
[A]
Catalase
[B]
Invertase
[C]
Rubisco
[D]
Nitrogenas
(7)
An organic substance bound to an enzyme and essential for its activity is called:
[A]
coenzyme
[B]
holoenzyme
[C]
apoenzyme
[D]
isoenzyme
(8)
The scientist who coined the term enzyme is:
[A]
Kuhne
[B]
Berzilius
[C]
Bloor
[D]
Sumner
(9)
Which of the following does not contain DNA:
[A]
Sperm
[B]
Ovum
[C]
Mature RBCs
[D]
Chloroplast
(10)
Cytoskeleton is made up of:
[A]
Cellulosic microfibrils
[B]
Proteinaceous filaments
[C]
Calcium carbonate filaments
[D]
callose deposits
Answer: Proteinaceous filaments
(11)
An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called:
[A]
thylakoid
[B]
endoplasmic reticulum
[C]
plasmalemma
[D]
cytoskeleton
(12)
The plasma memebrane consists mainly of:
[A]
proteins embedded in a carbohydrate bilayer
[B]
phospholipids embedded in a protein bilayer
[C]
proteins embedded in a phospholipid bilayer
[D]
proteins embedded in a polymer of glucose molecules
Answer: proteins embedded in a phospholipid bilayer
(13)
Which biomolecule is distributed more widely in a cell?
[A]
Chloroplast
[B]
RNA
[C]
DNA
[D]
Spaherosomes
(14)
Which is a reducing sugar?
[A]
Galactose
[B]
Gluconic acid
[C]
Sucrose
[D]
β-methyl galactosidase
(15)
Most abundant RNA in the cell
[A]
rRNA
[B]
mRNA
[C]
tRNA
[D]
tRNA threonine
(16)
Phospholipids are esters of glycerol with
[A]
one carboxylic acid residue and two phosphate groups
[B]
three phosphate groups
[C]
three carboxylic acid residues
[D]
two carboxylic acid residues and one phosphate groups
Answer: two carboxylic acid residues and one phosphate groups
(17)
Which one of the following gives positive Fehling's solution test ?
[A]
Sucrose
[B]
Glucose
[C]
Fats
[D]
Protein
(18)
Which of the following is the sweetest sugar?
[A]
Sucrose
[B]
Glucose
[C]
Fructose
[D]
Maltose
(19)
a-D-(+)-glucose and b-D-(+)-glucose are
[A]
anomers
[B]
epimers
[C]
enantiomers
[D]
geometrical isomers
(20)
The couplings between base units of DNA is through
[A]
hydrogen bonding
[B]
electrostatic bonding
[C]
covalent bonding
[D]
van der waal's forces
Please share this page
Chapters