Biomolecules Quiz-09

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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.   Answer briefly I. Which colour glycogen gives on its reaction with iodine solution? II. What is satellite DNA? III. Name three components of a nucleotide molecule Correct option will all answers is
  •  I-Blue II-Long sequences III-Phosphoric acid, pentose sugar and nitrogenous base
  •  I-Red II-Repetitive base pairs III-Phosphoric acid, pentose sugar and nitrogenous organic base
  •  I-Blue II-Non-repetitive base pairs III-Glucose phosphoric acid, nucleic acids
  •  I-Red II-Non-repetitive base pairs III-Phosphoric acid, fructose, nucleotides
(b) I. Red II. Long stretches of repetitive base pairs is called satellite DNA III. Phosphoric acid, pentose sugar and nitrogenous organic base

Q2.   The aggregation of the various kinds of biomolecules in a cell is referred to as the
  •  Acid soluble pool
  •  Acid insoluble pool
  •  Cellular pool
  •  None of the above
(c) The aggregation of the various kinds of biomolecules in a cell is referred to as the cellular pool

Q3.   Identify the structural formulae and select the correct option

  •  A-Adenine, B-Adenosine, C-Adenylic acid
  •  A-Guanine, B-Adenosine, C-Adenylic acid
  •  A-Adenosine, B-Adenylic acid, C-Adenine
  •  A-Uracil, B-Adenosine, C-Adenylic acid
Q4.   Choose the correct statements I. Bond energy (ATP) is utilised for biosynthesis, osmotic and mechanical work that we perform II. When glucose is degraded into lactic acid in our muscles, energy of liberated III. Assembly of a proteins from amino acids requires energy IV. Majority of metabolic reactions can occur in isolation V. There are many examples of uncatalysed metabolic reactions
  •  Except IV and V
  •  I and III
  •  All of these
  •  None of these
(c) Majority of the metabolic reactions do not occur in isolation, they are always linked to some other reactions. There are many examples of catalysed metabolic reactions examples of catalysed metabolic reactions

Q5.   The double helical model of the DNA was proposed by Watson and Crick based on what data produced by Wilkins and Franklin?
  •  Hybridization
  •  DNA sequencing
  •  Southern blotting
  •  X-ray diffraction
  (d) In 1953, James Wateson and Francis Crick based on the X-ray diffraction data produced by Maurice, Wilkins and Rosalind Franklin, proposed a very simple but famous double helix model for the structure of DNA.

Q6.   Which of these is not a ketone body?
  •  Acetoacetic acid
  •  Acetone
  •  Succinic acid
  •  Betahydroxy butyric acid
(c) In humans and most other mammals, acetyl C0-A formed in liver during oxidation of fatty acids, can enter the citric acid cycle for production of energy or can be converted to ketone bodies, e.g., acetone, acetoacetate and betahydroxy butyric acid.

Q7.   Which enzyme is useful as colour brightening agent in detergent industry?
  •  Amylase
  •  Lipase
  •  Protease
  •  Cellulase
(d) Cellulase enzyme is used in detergent industry for colour brightening and softening.

Q8.   In which one of the following sets of three items each belong to the category mentioned against them?
  •  Lysine, glycine,thiamine – Amino acids
  •  Myosin, oxytocin and gastric – Hormones
  •  Rennin, helicase and hyaluronidase – Enzymes
  •  Optic nerve, oculomotor, vagus – Sensory nerves
(c) Rennin, helicase and hyaluronidase, all are enzymes.

Q9.   The globular proteins undergo structural changes, in response to extremes of pH or temperature, the process called
  •  Renaturation
  •  Denaturation
  •  Combination
  •  Both (a) and (b)
(b) Denaturation means deviation from natural form. Proteins or nucleic acids whenever exposed to extreme heat, pH or acids their structure become change. This process is known as denaturation.

Q10.   All enzymes are basically
  •  Carbohydrates
  •  Steroids
  •  Proteins
  •  Lipoproteins
(c) Enzymes are biocatalyst, which are basically proteins. All enzymes are proteins but all proteins are not enzymes.

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Biomolecules Quiz-09
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