Compounds of Life

The best definition of a biological molecule is_____________.

• any large organic molecule in any living organism.

• any hydrocarbon molecule

• any molecule that does not contain carbon

Proteins are polymers of ____________.

• fatty acids

• amino acids

• sterols

• lipids

The function of nucleic acids is related to _____________.

• Energy release

• Enzyme formation

• The storage and transmission of genetic information

• Catalyzing chemical reactions

Saturated fats have the maximum hydrogen atoms possible.

• 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

Tags

NGSS.MS-PS1-1

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

What are the four main types of biological 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

• none of the above

What is the difference between a saturated fat and an unsaturated fat?

• Saturated fat is solid at room temperature and unsaturated fat is liquid at room temperature

• Saturated fat has only single carbon-carbon bonds and unsaturated fat has at least one double or triple carbon-carbon bond

• Saturated fats are bad for you and unsaturated fats are better for you.

• All of the above

True or False: One of the main functions of a lipid is to store energy.

• True

• False

The basic structure of an amino acid includes these 2 functional groups: (select the 2 correct answers!)

• hydroxyl group

• halide group

• carboxyl group

• amino group