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MHT-CET Biomolecules — practice questions

Explore 80 free Biomolecules questions in MHT-CET Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Biomolecules questions and exercises with answers

Showing questions 1–30 of 80.

Which acid is used to grind living tissue when analysing its chemical composition?Read the answer and worked solution →What is the filtrate from a strained tissue slurry technically called?Read the answer and worked solution →By weight, which element is most abundant in the human body?Read the answer and worked solution →What is the most abundant chemical in living organisms?Read the answer and worked solution →What share of a cell's total composition is water?Read the answer and worked solution →In an amino acid, the amino and carboxyl groups are attached to which carbon?Read the answer and worked solution →Which amino acid has a hydrogen atom as its R group?Read the answer and worked solution →Which of these is NOT an aromatic amino acid?Read the answer and worked solution →What is the form of an amino acid bearing both positive and negative charges called?Read the answer and worked solution →Including its carboxyl carbon, palmitic acid has how many carbon atoms?Read the answer and worked solution →What is a fatty acid without any C=C double bond called?Read the answer and worked solution →Why does gingelly oil remain liquid during winter?Read the answer and worked solution →Lecithin belongs to which class of lipids?Read the answer and worked solution →What is a nitrogen base joined only to a sugar called?Read the answer and worked solution →Which pair of nitrogen bases are substituted purines?Read the answer and worked solution →DNA is named after which sugar present in it?Read the answer and worked solution →Which is NOT a part of a nucleotide?Read the answer and worked solution →Morphine and codeine belong to which group of secondary metabolites?Read the answer and worked solution →Which statement about secondary metabolites is true?Read the answer and worked solution →Why do lipids settle in the acid-insoluble fraction?Read the answer and worked solution →What molecular weight range is typical of proteins and nucleic acids?Read the answer and worked solution →Why is a protein called a heteropolymer?Read the answer and worked solution →What makes an amino acid essential for humans?Read the answer and worked solution →Which is the most abundant protein in the animal world?Read the answer and worked solution →Counting all life on Earth, which protein occurs in the greatest amount?Read the answer and worked solution →What is the function of the protein GLUT-4?Read the answer and worked solution →Cellulose is a homopolymer of which monosaccharide?Read the answer and worked solution →Inulin is a polymer made of which sugar?Read the answer and worked solution →Which polysaccharide stores energy in animal cells?Read the answer and worked solution →Why does starch turn blue with iodine?Read the answer and worked solution →

Worked practice questions

Which acid is used to grind living tissue when analysing its chemical composition?

  1. Trichloroacetic acid
  2. Hydrochloric acid
  3. Dilute sulphuric acid
  4. Glacial acetic acid
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Correct answer: A. Trichloroacetic acid

Living tissue is ground in trichloroacetic acid with a mortar and pestle to give a slurry for analysis.

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What is the filtrate from a strained tissue slurry technically called?

  1. Acid-insoluble pool
  2. Acid-soluble pool
  3. Retentate fraction
  4. Mineral ash residue
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Correct answer: B. Acid-soluble pool

Straining the acid slurry gives a filtrate called the acid-soluble pool, while the retentate is acid-insoluble.

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By weight, which element is most abundant in the human body?

  1. Carbon
  2. Hydrogen
  3. Oxygen
  4. Nitrogen
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Correct answer: C. Oxygen

Oxygen makes up about 65 percent of human body weight, far more than carbon at 18.5 percent.

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