Biomolecules Quiz-01

Biomolecules Quiz-01

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. .

Q1.   Identify the given structure and name the compound

•  Ribose b) c) d)
•  Sucrose
•  Glucose
•  Ribulose

Solution
(c) Glucose

Q2.   Which kinds of structures of proteins are shown in the figures given below

•  A=1° structure, B = 2° structure, C = 3° structure, D = 4° structure
•  A=4° structure, B = 2° structure, C = 3° structure, D = 1° structure
•  A=1° structure, B = 4° sstructure, C = 3° structure, D = 2° structure
•  A=4° structure, B = 3° structure, C = 2° structure, D = 1° structure

Solution
(c) A = 1° structure B = 4° sstructure C = 3° structure D = 2° structure

Q3.   Select the correct constituents of protein

•  Carbon, hydrogen, oxygen and nitrogen
•  Carbon, hydrogen, nitrogen and sulphur
•  Carbon, hydrogen, nitrogen, oxygen and sulphur
•  Carbon, hydrogen and oxygen

Solution
(c) The proteins are composed of carbon, hydrogen, oxygen, nitrogen and sulphur. Certain proteins may contain phosphorous, iron or other elements also

Q4.   Select the secondary metabolites from the list given below I. alkaloids II. flavonoids III. rubber IV. essential oils V. antibiotics VI. coloured pigments VII. scents VIII. gums IX. spices Choose the correct option

•  I to IX
•  All except II and IX
•  I, III, IV and VI
•  All except I and VII

Solution
(a) Thousands of compounds including flavonoids, rubber, essential oils, antibiotics, coloured pigments, scents, gums, spices. There are called secondary metabolites

Q5.   Protein in silk thread is

•  Fibroin
•  Keratin
•  Albumin
•  Globulin

Solution
  (a)

Q6.   A high fever is dangerous to humans because

•  Proteins are used up quickly
•  Fats are oxidised
•  Enzymes are denatured
•  BMR is lowered

Solution
(c) At high temperature, enzymes present in the body gets destroyed

Q7.   The regulation of the chemical composition of blood and body fluids and other aspects of its internal environment by an organism to maintain the physiological process is called

•  Entropy
•  Enthalpy
•  Homeostasis
•  Metabolism

Solution
(c) The regulation of the chemical composition of blood and body fluids and other aspects of its internal environment by an organism, to maintain its physiological processes is called homeostasis

Q8.   Which of the following is incorrect?

•  In cellular organisms, DNA is genetic material
•  Adenylic acid is nucleoside
•  Cytidine is nucleoside
•  N-bases (A, G, C, T, U) have heterocyclic rings

Solution
(b) Adenylic acid is not a nucleoside, it is a nucleotide

Q9.   Nucleotides are formed by

•  Purine, sugar and phosphate
•  Purine, pyrimidine and phosphate
•  Purine or pyrimidine, sugar and phosphate
•  Pyrimidine, sugar and phosphate

Solution
(b) The nucleotide is formed by the union of a phosphate group with a nucleoside. A nucleoside contains a sugar molecule along with an organic nitrogenous base. Thus, a nucleotide contains a organic nitrogenous base (purine or pyrimidine) along with a sugar molecule and a phosphate group, i.e., Nucleoside=Sugar molecule+Organic nitrogenous base. Nucleotide=Nucleoside+Phosphate group.

Q10.   Richest source of protein is

•  Rice
•  Gram
•  Wheat
•  Glycine max

Solution
(d) Glycine max or soybean is the richest source of protein (36-44%). From its seeds edible oil and a milk-like substance is obtained, which is used as a substitute of milk.