Biomolecules Quiz-08
Dear Readers,
NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions.
About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus.
Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced.
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Q1.
The fastest acting enzyme, in the biological kingdom, is
Solution
(d) Carbonic anhydrase is found in red blood cells. This is the fastest acting enzyme and helps in the formation as well as decomposition of carbonic acid to carry carbon dioxide.
(d) Carbonic anhydrase is found in red blood cells. This is the fastest acting enzyme and helps in the formation as well as decomposition of carbonic acid to carry carbon dioxide.
Q2.
Silk consists of
Solution
(b) The central core of silk fibre is made up of fibroin protein. Silk fibres are soft and flexible. These are composed of β-pleated sheets.
(b) The central core of silk fibre is made up of fibroin protein. Silk fibres are soft and flexible. These are composed of β-pleated sheets.
Q3.
Choose the element which is negligible in living matter
Solution
(a) Silicon is almost negligible in living organism. A comparison of elements present in non-living and living matter is as follows *Adapted from CNR Rao, Understanding Chemistry Universities Press Hyderabad
(a) Silicon is almost negligible in living organism. A comparison of elements present in non-living and living matter is as follows *Adapted from CNR Rao, Understanding Chemistry Universities Press Hyderabad
Q4.
Which disaccharide has different linkage?
Solution
(c) Sucrose has different linkage. It consists of 1, D-glucose and 1, D-fructose units jointed by α-1,2-glycosidic linkage.
(c) Sucrose has different linkage. It consists of 1, D-glucose and 1, D-fructose units jointed by α-1,2-glycosidic linkage.
Q5.
Fluidity of bio-membranes can be shown by
Solution
(d) In fluorescence microscopy, the object is stained with a fluorescent substance and when stained cell or all parts are observed through ordinary microscope using UV light, appear as luminous objects. This technique is helpful to show the fluidity of biomembranes.
(d) In fluorescence microscopy, the object is stained with a fluorescent substance and when stained cell or all parts are observed through ordinary microscope using UV light, appear as luminous objects. This technique is helpful to show the fluidity of biomembranes.
Q6.
For nucleic acids, the building block is a
Solution
(a) For nucleic acids, the building block is a nucleotide. A nucleotide has three chemically distinct components. One is a heterocyclic compound, second is a monosaccnaride and the third a phosphoric acid or phosphate
(a) For nucleic acids, the building block is a nucleotide. A nucleotide has three chemically distinct components. One is a heterocyclic compound, second is a monosaccnaride and the third a phosphoric acid or phosphate
Q7.
Which of the following statements are incorrect?
I. Left end of a polysaccharide is called non-reducing end while right end is called reducing end
II. Starch and glycogen are branched molecules
III. Starch and glycogen are the reserve food materials of plants and animals, respectively
IV. Starch can hold iodine molecules in its helical secondary structure but cellulose being non-helical, cannot hold iodine
Solution
(d) All statements are correct
(d) All statements are correct
Q8.
Carbohydrates, the most abundant biomolecules earth, are produced by
Solution
(c) Carbohydrates are the products of photosynthesis, which is carried out by photosynthetic bacteria, green algae and green plant cells.
(c) Carbohydrates are the products of photosynthesis, which is carried out by photosynthetic bacteria, green algae and green plant cells.
Q9.
Which is a reducing sugar?
Solution
(a) Glucose, fructose, mannose and galactose are hexose monosaccharides. The monosaccharides have free aldehyde or ketone group, which can reduce 〖Cu^2〗^+to Cu. Therefore, these are called reducing sugars.
(a) Glucose, fructose, mannose and galactose are hexose monosaccharides. The monosaccharides have free aldehyde or ketone group, which can reduce 〖Cu^2〗^+to Cu. Therefore, these are called reducing sugars.
Q10.
Identify X and Y in the given protein structure
Solution
(a)
(a)
