Biomolecules Check-In 8-27-24

What are the four major groups of macromolecules found in living things?

• Carbohydrates, lipids, nucleic acids, and proteins

• Sugars, starches, cellulose, and glycogen

• Monomers, polymers, polysaccharides, and monosaccharides

• Carbon, hydrogen, oxygen, and nitrogen

Anika is baking a cake and needs to understand the ratio of carbon to hydrogen to oxygen in the sugar she is using. What is the ratio?

• 1:2:1

• 2:1:2

• 1:1:2

• 2:2:1

What are lipids mostly composed of?

• Carbon and oxygen

• Carbon and hydrogen

• Hydrogen and nitrogen

• Oxygen and nitrogen

What is the primary function of nucleic acids?

• To store energy

• To form biological membranes

• To store and transmit genetic information

• To waterproof coverings

Ava and Isla are studying biology. They come across a diagram of a nucleotide. Which of the following is NOT a component of a nucleotide?

• A 5-carbon sugar

• A phosphate group

• A fatty acid

• A nitrogenous base

During a biology class, Emma asked, 'What type of bond links amino acids together to form proteins?'

• Ionic bonds

• Hydrogen bonds

• Peptide bonds

• Covalent bonds

Which of the following is a function of proteins?

• Storing genetic information

• Forming waterproof coverings

• Regulating cell processes

• Storing energy

Which of the following is a type of nucleic acid?

• ATP

• RNA

• Amino acid

• Fatty acid

Which biomolecule makes up cell membranes?

• Protein

• Carbohydrate

• Lipid

• Nucleic acid

Priya, Nora, and Michael are conducting a science experiment. They need to identify the monomer of carbohydrates for their experiment. Can you help them?

• Glucose

• Maltose

• Lactose

• Sucrose

Answer explanation

Carbohydrates are made up of sugar molecules, and the simplest form of these is monosaccharides. Glucose, a type of monosaccharide, is the monomer unit of carbohydrates. It is the simplest form of sugar that serves as an essential energy source. Maltose, Lactose, and Sucrose are all disaccharides, meaning they are composed of two monosaccharide units.