Compounds of Life

Proteins are polymers of

• fatty acids

• amino acids

• sterols

• Nucleic acids

The function of nucleic acids is related to

• Energy release

• Enzyme formation

• Transmission of genetic information

• Catalyzing chemical reactions

The carbohydrate found only in plants is

• Fructose

• glycogen

• cholesterol

• cellulose

The simplest carbohydrates are called:

• peptide

• monosaccharide

• fatty acid

• glycerol

A common sterol whose excessive intake is related to heart disease is cholesterol

• True

• False

Including saturated fats in the diet may help to prevent heart disease

• True

• False

Carbohydrates are made up of three of the six major molecules found in living things. The general chemical formula for a carbohydrate is CH₂O. Which elements combine to make a carbohydrate?

• copper and cobalt

• chlorine and oxygen

• carbon, helium, and oxygen

• carbon, hydrogen, and oxygen

When people eat foods high in proteins, such as meat, eggs and cheese, the body breaks down the proteins into smaller molecules. What is supplied to cells when the body breaks down proteins?

• amino acids
• nucleic acids
• phospholipids
• carbohydrates

Tags

NGSS.MS-LS1-7

What are the four main types of molecules found in the cells of living things?

• carbohydrates, lipids, nucleic acids, and proteins
• lipids, nutrients, nucleic acids, and carbon dioxide
• carbon dioxide, hydrogen, oxygen, and various salts
• atoms, molecules, chemical compounds, and carbohydrates

What type of molecule provides immediate energy in cells?  

• lipids
• proteins
• carbohydrates
• nucleic acids