Topic 1.2 Elements of Life

Which macromolecule is primarily responsible for enzyme catalysis, cell structure, and immune response?

• Carbohydrates

• Proteins

• Lipids

• Nucleic acids

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Topic-1.2

Which macromolecule serves as a long-term energy storage molecule, insulation, and component of cell membranes?

• Proteins

• Carbohydrates

• Nucleic acids

• Lipids

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Topic-1.2

Nucleic acids play a crucial role in:

• Enzyme function

• Energy storage

• Hereditary information

• Lipid synthesis

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Topic-1.2

How does the R group of an amino acid affect the folding of a protein?

• It determines the protein's color.

• It affects the protein's solubility.

• It determines the protein's pH.

• It influences the protein's 3D structure and function.

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Topic-1.2

Which elements are commonly found in carbohydrates?

• Carbon, hydrogen, oxygen

• Carbon, hydrogen, nitrogen

• Carbon, oxygen, phosphorus

• Carbon, sulfur, nitrogen

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Which elements are present in nucleic acids?

• Carbon, hydrogen, oxygen, nitrogen, phosphorus

• Carbon, oxygen, nitrogen, phosphorus

• Carbon, sulfur, phosphorus

• Carbon, hydrogen, oxygen

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Lipids are characterized by their high content of which elements?

• Carbon and hydrogen

• Carbon, nitrogen, and oxygen

• Carbon, oxygen, and sulfur

• Carbon, hydrogen, and phosphorus

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What process breaks down macromolecules into their smaller subunits?

• Dehydration synthesis

• Hydrolysis

• Transcription

• Translation

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Topic-1.2

Which macromolecule commonly contains phosphorus?

• Carbohydrates

• Proteins

• Nucleic acids

• Lipids

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Topic-1.2

The building blocks of proteins are:

• Amino acids

• Nucleotides

• Monosaccharides

• Fatty acids

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Topic-1.2