PYQSide ExamsMy practice

Biomolecules (Biology) · Question 89

AIPMT 2001MCQHard📈 Topic in 38% papers+4−1
1

Spoilage of oil can be detected by which fatty acid?

  1. Linolenic acid
  2. Erucic acid
  3. Linoleic acid
  4. Oleic acid

Answer

(2) Erucic acid

Solution

As per NCERT, fatty acids are unsaturated (with one or more C=C double bonds) or saturated, and oils are lipids with a low melting point.

∵ Erucic acid ( C21H41COOH, cis-13-docosenoic acid) is a long-chain unsaturated fatty acid present in mustard and rapeseed oils.

⇒ Its content is the marker estimated in testing the quality of edible oil; an abnormal (high) level shows that the oil is spoiled or adulterated and unfit to eat.

∴ Spoilage of oil is detected by erucic acid.

Answer: (2)

AIPMT 2001

Keep practising — Biomolecules (Biology)

2

In plants, inulin and pectin are

  1. Excretory material
  2. Reserve material
  3. Insect attracting material
  4. Wastes
AIPMT 2001
3

Role of enzyme in reactions is to/as

  1. decrease activation energy
  2. increase activation energy
  3. inorganic catalyst
  4. none of the above.
AIPMT 2000
4

Which factor is responsible for inhibition of enzymatic process during feedback?

  1. Substrate
  2. Enzymes
  3. End product
  4. Temperature
AIPMT 2000
5

ATP is

  1. nucleotide
  2. nucleoside
  3. nucleic acid
  4. vitamin.
AIPMT 2000
6

Which of the following have carbohydrate as prosthetic group?

  1. Glycoprotein
  2. Chromoprotein
  3. Lipoprotein
  4. Nucleoprotein
AIPMT 2000
7

Essential amino acid is

  1. phenylalanine
  2. glycine
  3. aspartic acid
  4. serine
Out of syllabusAIPMT 2000

All Biomolecules (Biology) PYQs →

PDFDownload Biomolecules (Biology) PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)