Free Macromolecules MCQs with Answers
299 Macromolecules MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.
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Read the Macromolecules notesFree MDCAT chapter notes with key terms299 questions · page 8 of 15
- A. Amino acids
- B. Hormones
- C. Proteins
- D. Terminal amino acids
Explanation: Peptides containing more than 10 amino acids are called poly peptides. Poly peptides are formed by the linear sequence of amino acids.
Correct answer: Proteins- A. Van der Waals forces
- B. Ionic bonding
- C. Hydrogen bonding
- D. Dipole-induced dipole forces
Explanation: The bases in each complementary base pair have hydrogen bonds between them, which keeps the two strands together and stable.
Correct answer: Hydrogen bonding- A. 9
- B. 6
- C. 3
- D. 12
Explanation: For such questions, try to make all possible combinations of amino acids.
Correct answer: 6- A. Nitrogen family
- B. Alkali metals
- C. Rare earth metals
- D. Oxygen family
Explanation: The word potassium stems from the English "pot ash," which was used to isolate potassium salts.
Correct answer: Alkali metals- A. glycine
- B. alanine
- C. lysine
- D. glutamic acid
Explanation: Lysine is a basic amino acid. It has a side chain with an amino group (-NH2) which can accept a proton (H+) and make the amino acid basic…
Correct answer: lysine146. Haemoglobin is a
- A. Genetic protein
- B. Building protein
- C. Transport protein
- D. Structural protein
Explanation: Transport protein: This option is correct. Haemoglobin is a transport protein found in red blood cells.
Correct answer: Transport protein- A. Adenine
- B. Guanine
- C. Uracil
- D. Thymine
Explanation: Uracil: Uracil is not found in DNA. It is a nitrogenous base that is specific to RNA (ribonucleic acid) instead.
Correct answer: Uracil- A. A
- B. B
- C. C
- D. D
Explanation: In basic conditions, the amino acid exists in the form of its conjugate base called the zwitterion or dipolar ion.
Correct answer: D- A. Glucose
- B. Starch
- C. Protein
- D. Glycogen
Explanation: Glycogen is the principal energy storage carbohydrate in animals. It is a highly branched polymer of glucose molecules and is stored in…
Correct answer: Glycogen- A. Protein
- B. Polypeptide
- C. Dipeptide
- D. Tripeptide
Explanation: A peptide is two or more amino acids joined together by peptide bonds; a polypeptide is a chain of many amino acids; and a protein…
Correct answer: Protein- A. Pentoses
- B. Hexoses
- C. Heptoses
- D. Butoses
Explanation: Hexoses are simple sugars with 6 carbon atoms with the chemical formula C6H12O6.
Correct answer: Hexoses- A. Essential amino acids
- B. Non-essential amino acids
- C. Alpha amino acids
- D. Beta amino acids
Explanation: The amino acids which are not synthesized by the human body and must be obtained from the diet are called "Essential amino…
Correct answer: Essential amino acids- A. Cysteine
- B. Serine
- C. Haloamine
- D. Proline
Explanation: Haloamine is not an amino acid but is rather a class of organic compounds containing an amine and halogen group.
Correct answer: Proline- A. A
- B. B
- C. C
- D. D
Explanation: The chemical formula for glutamic acid is C5H9NO4. Glutamic acid is an amino acid with a carboxylic acid functional group (-COOH) and an…
Correct answer: A- A. Anion
- B. Cation
- C. Zwitterion
- D. Neutral Specie
Explanation: At low pH the amino acids gain the proton at -NH2 group to form - NH3+,making a cation(positively charged particle).
Correct answer: Cation- A. Fehling's solution
- B. Benedict's solution
- C. Ninhydrin
- D. Copper (II) Sulphate
Explanation: The reagent used for the identification of amino acids is Ninhydrin.Ninhydrin is a chemical compound that reacts with amino acids to…
Correct answer: Ninhydrin- A. Propene-1, 2, 3-triol
- B. Propane-1, 2, 3-triol
- C. Propene-1, 2, 3-diol
- D. Propane-1, 2, 3-diol
Explanation: The correct term for the compound is "Propane-1, 2, 3-triol."Fats, also known as triglycerides, are esters formed from glycerol…
Correct answer: Propane-1, 2, 3-triol- A. Cytosine
- B. Adenine
- C. Thyamine
- D. Guanine
Explanation: The base "Thymine" (T) is not present in RNA. Instead, RNA contains the base "Uracil" (U).
Correct answer: Thyamine- A. Acidic amino acids
- B. Basic amino acids
- C. Beta amino acids
- D. Alpha amino acids
Explanation: α-amino acids exist as dipolar ions or zwitter ions.
Correct answer: Alpha amino acids- A. A
- B. B
- C. C
- D. D
Explanation: When ammonia gas is passed through acetic acid, ammonium actate salt is formed (acid base reaction).
Correct answer: B