Biomolecules — practice questions
75 curated practice questions from Biomolecules (Biology Class 11, CBSE) — 75 easy. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Read the given statements and select the correct option. (i) Right end of a polysaccharide chain is called reducing end…
- Proteins perform many physiological functions. For example, some proteins function as enzymes. One of the following…
- Refer the two reactions (i) and (ii) given below and select the correct option. (i) ADP + Pi → ATP (ii) ATP → ADP + Pi…
- Inhibition of succinate dehydrogenase by malonate is an example of
- Enzymes catalyse the biochemical reactions by ____ the activation energy.
- Holoenzyme is the complete enzyme consisting of an apoenzyme and a cofactor. Select the option that correctly…
- Refer the given reaction. Enzyme A used in the reaction, belongs to which class of enzymes?
- Match Column - I with Column - II and select the correct option from the codes given below. Column - I Column - II A…
- Identify X and Y in the given sequence. X Y a) N-terminal amino acid C-terminal amino acid b) N-terminal amino acid…
- Enzymes are most functional at the temperature range of
- Refer the given reactions. (i) Adenine + X → Adenosine (ii) Adenosine + Y → Adenylic acid What does X and Y represent…
- How many carbon atoms are generally used in composition of monosaccharides?
- It is said that elemental composition of living organisms and that of inanimate objects (like earth’s crust) are…
- Identify the amino acids given below and select the correct option. (i) (ii) (iii) a) Glycine Serine Alanine b) Alanine…
- Primary structure of proteins is due to the presence of
- The most abundant chemical in living organisms could be
- Read the given statements and select the correct option. Statement 1 : Haemoglobin is an example of quaternary…
- Select the right option regarding the given graph. X - axis Y - axis a) Rate of reaction Enzymatic activity b)…
- Read the given statements. (i) Fructose is the sweetest sugar. (ii) Glycine is the simplest amino acid. (iii) Lactose…
- Read the given statements and select the correct option. Statement 1 : Low temperature destroys enzymes by causing…
- Given structural formula is correctly identified alongwith its related function by which of the following options?
- The component present in both nucleotides and nucleosides is
- The four elements called “big-four” which make up 95% of all elements found in a living system are
- In a DNA molecule, the phosphate group is attached to _________ carbon of the sugar residue of its own nucleotide and…
- The inhibitor which does not resemble the substrate in structure and binds to the enzyme at site other than the active…
- Which of the following elements is not found in living organism?
- Match Column - I with Column - II and select the correct option from the codes given below. Column - I Column - II A…
- Saturated fatty acids possess _____ bonds between carbon atoms and are _____at room temperature.
- An a helix is the example of which type of protein structure?
- Acidic amino acids have two –COOH groups and one –NH 2 group per molecule. Select the pair that consists of acidic…
- Read the given statements and select the correct option. Statement 1 : Ribozymes are RNA molecules which catalyze the…
- Take a living tissue, grind it in trichloroacetic acid using pestle and mortar, and then strain it, you would obtain…
- An unknown liquid collected from a sample of peas, is added to a beaker of water and is vigorously shaken. After few…
- Which of the following statements is incorrect regarding enzymatic activity?
- The correct order of chemical composition of living tissues/cells in term of percentage of the total cellular mass is
- Triglycerides are fatty acid esters of glycerol, which are formed by the esterification of ____ molecule(s) of fatty…
- The sum total composition of acid soluble and acid insoluble fraction represents the entire composition of
- Study the given statements and select the correct option. (i) Carbohydrates, proteins, nucleic acids and lipids are…
- Which of the following options correctly identifies the structural formulae shown in figure? A B a) Fructose Ribose b)…
- Adenosine, guanosine, thymidine, uridine, cytidine are all ______ but adenylic acid, guanylic acid, uridylic acid…
- Identify the given structural formulae and select the correct option. 1 2 a) Adenine Uracil b) Guanine Thymine c)…
- A form of amino acid with both positive and negative charges simultaneously in the same molecule is
- Given molecular formula belongs to which of the following groups of biomolecules?
- Keratin present in hair shows secondary structure known as
- Match Column - I with Column - II and select the correct option from the codes given below. Column - I Column - II A…
- What will be the molecular formula of a polypeptide consisting of 10 glycine molecules when the formula of glycine is C…
- Which one of the given graphs shows the effect of pH on the velocity of a typical enzymatic reaction (V)?
- A b -pleated sheet organization in a polypeptide chain is an example of
- Which of the two groups of the given formula is involved in peptide bond formation between different amino acids?
- At some points a protein molecule may be folded back on itself. This is called _____ structure and folds or coils are…
- The b –pleated sheet structure of proteins is due to
- Study the given statements and select the correct answer. (i) Cellulose is a homopolymer of glucose. (ii) Inulin is a…
- The number of `ends’ in a glycogen molecule would be
- Reducing sugars are those which can reduce Cu +2 ions to Cu + state. On that basis which of the following can be…
- The inhibitor which closely resembles the substrate in its molecular structure and inhibits the enzyme activity by…
- Enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis, addition of groups to…
- Read the given statement and select the option that correctly identifies X and Y. In a glycogen molecule, successive…
- Read the given statements and select the option that correctly sorts these with respect to A and B in the given flow…
- Enzymes are biocatalysts. They catalyse biochemical reactions. In general they reduce activation energy of reactions…
- The inorganic compounds like sulphate, phosphate, etc., are found in
- Select the option that correctly identifies the chemical bonds present in the given biomolecules. Polysaccharides – A…
- ______ is the most abundant protein in animal world and _____ is the most abundant protein in the whole biosphere.
- Dihydroxyacetone-3-phosphate and glyceraldehyde-3-phosphate are interconvertible. The enzyme responsible for this…
- What does A represent in the given diagram of a nucleotide?
- Which one of the given graphs shows the effect of temperature on the velocity of a typical enzymatic reaction?
- Given structural formula is correctly identified alongwith its related function by which of the following options?
- B-DNA which is right-handed double helix contains ____ base pairs per turn of the helix and each turn is ___ long.
- Michaelis Menten Constant (K m ) is equal to
- The proteinaceous molecule that joins a non-protein prosthetic group to form a functional enzyme, is called
- Which of the following secondary metabolites are used as drugs?
- Which of the following statements is not correct regarding chitin?
- Proteins are heteropolymers made up of ___ types of monomers of amino acids.
- Which of the following statements about amino acids is incorrect?
- Which one of the following graphs shows the relationship between the rate of an enzymatic activity and substrate…
- Which of the following statements about enzymes are correct? (i) Enzymes do not alter the overall change in free energy…