Exploring Macromolecules and Their Functions

Which of the following is NOT a type of biological macromolecule?

• Carbohydrates

• Lipids

• Vitamins

• Proteins

What is the primary function of carbohydrates in living organisms?

• Genetic information storage

• Energy source

• Catalyzing reactions

• Cell signaling

Tags

NGSS.MS-LS2-3

Which level of protein structure is determined by the sequence of amino acids?

• Primary

• Secondary

• Tertiary

• Quaternary

Which macromolecule is responsible for storing genetic information?

• Lipids

• Proteins

• Nucleic acids

• Carbohydrates

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is a function of lipids in biological systems?

• Catalyzing biochemical reactions

• Long-term energy storage

• Transporting oxygen

• Encoding genetic information

Enzymes are a type of which macromolecule?

• Carbohydrate

• Lipid

• Protein

• Nucleic acid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which of the following best describes the difference between DNA and RNA?

• DNA contains uracil, RNA contains thymine

• DNA is single-stranded, RNA is double-stranded

• DNA stores genetic information, RNA helps in protein synthesis

• DNA is made of amino acids, RNA is made of nucleotides

How does the structure of a phospholipid contribute to its function in cell membranes?

• Its hydrophobic tails and hydrophilic heads allow it to form bilayers

• Its rigid structure provides energy

• Its positive charge attracts water molecules

• Its single fatty acid chain increases flexibility

Which statement best explains why enzymes are considered biological catalysts?

• They are made of nucleic acids

• They increase the rate of chemical reactions without being consumed

• They provide energy for reactions

• They are used up during reactions

Tags

NGSS.HS-PS1-2

Which of the following best describes the relationship between the primary and tertiary structure of a protein?

• The tertiary structure determines the sequence of amino acids

• The primary structure folds to form the tertiary structure

• The tertiary structure is unrelated to the primary structure

• The primary structure is only found in enzymes