Biomolecules

Front

Which of the following is NOT a biomolecule?

Water

,

Carbohydrate

,

Lipid

,

Protein

,

Nucleic acid

Back

Water

Answer explanation

Water is an essential substance, but it is not a biomolecule for numerous reasons:

1. It does not contain C, H, O

2. It is not a carbohydrate, a lipid, a protein, or a nucleic acid.

Front

What is the monomer of a carbohydrate called?

Back

monosaccharide

Answer explanation

Mono means ONE and saccharide comes from the greek to mean 'sugar'. So a monosaccharide means ONE SUGAR.

Front

Lipids are made up of glycerol and three 'tails' or 'legs'. What are those 'tails' or 'legs' called?

Back

fatty acids

Answer explanation

Lipids technically do not have a monomer, as they cannot polymerize to make a larger molecule. However, many lipids called triglycerides comprise of a glycerol molecule attached to 3 fatty acids.

Front

What is the monomer of a nucleic acid called?

Back

nucleotide

Answer explanation

DNA and RNA are both polymers, large molecules made up of repeating units or monomers. Their monomers are called NUCLEOTIDES and comprise of a sugar, a phosphate, and a base.

Front

All biomolecules contain Carbon, Hydrogen, and Oxygen.

Back

Answer explanation

Front

This biomolecule gives us access to energy almost immediately?

Back

Carbohydrate

Answer explanation

Carbs are our primary source of energy, they are stored short term. Lipids or fats are a long term source of energy. When all else fails, proteins are used as an energy source.

Front

This biomolecule is a store of long-term energy. Options: Lipids, Carbohydrates, Proteins, Nucleic acids

Back

Lipids

Answer explanation

We store lipids or fat as a source of long term energy. Camels fill their humps with lipids so that they have an large store of energy for long desert crossings.

Front

These biomolecules help with the building of tissue and muscle, speeds reactions up, fight off diseases, and are essential for our bodies to function. Options: Lipids, Carbohydrates, Proteins, Nucleic acids.

Back

Proteins

Answer explanation

Yep, proteins are make up our muscles and tissues, are enzymes, are antibodies, and are just awesome!