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Quiz-14

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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.  Identify the zwitterionic form in the given reversible reaction


  •   A is the zwitterionic form
  •   C is the zwitterionic form
  •   B is the zwitterionic form
  •   None of the above
Solution
A form of amino acid with both positive and negative charges simultaneously in the same molecule is called twitter ionic form

Q2. An -helix is the example of …… protein structure
  •  Primary
  •  Secondary
  •   Tertiary
  •   Quaternary
Solution
An -helix is an example of secondary protein structure

Q3.   Pick the odd statement out
  •   Removal of from amino acids converts an amino acid into an amine
  •   All the biomolecules have a turnover
  •   Metabolic pathway are termed as transformation reactions
  •   Metabolic pathways always follows a linear route
Solution
Metabolic pathways not always follow linear routes. They are circular sometimes. These pathways criss-cross each other

Q4.  The DNA in which the base sequence of one strand is opposite to that of other strand when read from opposite direction is called
  •   Satellite DNA
  •   Palindromic DNA
  •   Repetitious DNA
  •   Non-coding DNA
Solution
Palindromic DNA Satellite DNA part of DNA having long stretches of repetitive base pairs Non-coding DNA Greater part of DNA is eukaryotic cells does not code for RNAs. This ‘extra’ DNA seems to have no function. It has two special forms (i) Repetitions DNA (ii) Jumping genes

Q5. Name the plant pigments present in the following I. Carrots II. Tomatoes
  •   I-Tycopene II-Carotene
  •   I-Carotene II-Lycopene
  •   I-Leucopene II-Carotene
  •   None of the above
Solution
  (i) Carrots – Carotene (ii) tomatoes – Lycopene

Q6.  Formation of lactic acid form glucose occurs in… metabolic steps
  •   25
  •  5
  • 30
  •   137.
Solution
Metabolic pathway from glucose to lactic acid occurs in 10 metabolic steps. This pathway is known as glycolysis

Q7. Which of the following radioisotope is not suitable for DNA labeling based studies?
  •   H3
  •   P 32
  •   N15
  •   S35
Solution
radioisotope is not suitable for DNA labelling based studies as DNA does not contain sulphur. radioisotope is suitable for protein labeling based studies because protein contains sulphur.

Q8. The inhibitor which binds to the enzyme at site other than the active site and do not resemble the substrate in structure is called
  •   Activator
  •   Substrate analogue
  •   Competitive inhibitor
  •   Non-competitive inhibitor
Solution
The non-competitive inhibitor binds to the enzyme at some site other than the substrate binding site and no product is formed. ., cyanide inhibits the mitochondrial enzyme cytochrome oxidase, which is essential for cellular respiration

Q9. Benedict’s reagent test is conducted to confirm the presence of
  •   Polysaccharides like starch
  •   Lipids
  •   Reducing sugars
  •   proteins
Solution
Such sugars, which give positive tests with Benedict’s solution and Tollen’s reagent are called reducing sugars. Most monosaccharides and some disaccharides are reducing sugars.

Q10.  Which of the following is a disaccharide?
  •   Glucose
  •   Fructose
  •   Sucrose
  • Galactose
Solution
Sucrose is a disaccharide, which on hydrolysis breaks down into glucose and fructose.



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Quiz14 biomolecules
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