Bio Macromolecules Quiz

Which of the following is the primary function of carbohydrates in organisms?

• Store genetic information

• Provide quick energy

• Catalyze biochemical reactions

• Form cell membranes

Answer explanation

Carbohydrates primarily function to provide quick energy in organisms.

Which type of macromolecule is primarily responsible for acting as enzymes in cells?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Answer explanation

Proteins are primarily responsible for acting as enzymes in cells.

Lipids are important for forming which part of the cell?

• Nucleus

• Ribosomes

• Cell membrane

• Mitochondria

Answer explanation

Lipids are important for forming the cell membrane, making it the correct choice.

Which of the following is a function of nucleic acids in organisms?

• Store and transmit genetic information

• Provide structural support

• Serve as a primary energy source

• Act as enzymes

Answer explanation

Nucleic acids function to store and transmit genetic information in organisms.

Proteins are made up of which of the following monomers?

• Monosaccharides

• Fatty acids

• Amino acids

• Nucleotides

Answer explanation

proteins = amino acids

carbohydrates = monosaccharides

lipids= fatty acids

nucleic acids= nucleotides

Which of the following best describes the structure of a carbohydrate?

• Long chains of amino acids

• Glycerol backbone with fatty acid chains

• Rings or chains of sugar molecules

• Double helix of nucleotides

Answer explanation

Carbohydrates are best described as rings or chains of sugar molecules,

amino acids= proteins

glycerol backbones with fatty acid chains= lipids

double helix of nucleotides= nucleic acids

What is the primary role of lipids in organisms?

• Catalyze biochemical reactions

• Store energy and form cell membranes

• Provide structural support

• Store genetic information

Answer explanation

Lipids primarily store energy and form cell membranes in organisms, providing essential functions for cellular structure and metabolism.

Which of the following macromolecules can act as enzymes?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Answer explanation

Proteins can act as enzymes, not carbohydrates, lipids, or nucleic acids. Enzymes are biological catalysts that speed up chemical reactions.

What is the main function of DNA in cells?

• Provide energy

• Catalyze biochemical reactions

• Store genetic information

• Form cell membranes

Answer explanation

The main function of DNA in cells is to store genetic information.

Which macromolecule is made of monosaccharides (sugars)?

• Carbohydrates

• Lipids

• Nucleic Acids

• Proteins

Answer explanation

Carbohydrates are the macromolecules made of monosaccharides (sugars), which are the building blocks of carbohydrates.