Chemistry in Biology

A macromolecule is found to have C, H, O, N, and S. Identify?

• Carbohydrate

• Lipid

• Nucleic Acid

• Protein

Answer explanation

All of the macromolecules have carbon (C), hydrogen (H), and oxygen (O). Nitrogen is found in proteins and nucleic acids. Sulfur is found in the R group of some amino acids. Proteins are the only macromolecule with C, H, O, N, and S.

Which is the best definition of a molecule? 

• Marshmallows that are stuck together.

• A mixture of different elements.

• Two or more atoms chemically bonded together.

• The smallest form of matter, consisting of protons, neutrons, and electrons.

Tags

NGSS.MS-PS1-1

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS1-6

Which macromolecule is primarily responsible for storing genetic information?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

What is the role of enzymes in biological reactions?

• They slow down reactions

• They act as catalysts to speed up reactions

• They are used up in reactions

• They provide energy for reactions

Tags

NGSS.HS-LS2-5

Which element is a key component of amino acids and proteins?

• Carbon

• Nitrogen

• Phosphorus

• Sulfur

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

What is the primary function of carbohydrates in living organisms?

• Store genetic information

• Provide energy

• Catalyze reactions

• Transport molecules

Tags

NGSS.MS-LS2-3

Which of the following is a common characteristic of lipids?

• They are soluble in water

• They are hydrophobic

• They are polymers

• They contain nitrogen

What is the chemical formula for glucose?

Tags

NGSS.HS-LS1-6