Biological Molecules Test CORRECTIONS

Scientists examine the structure of an organic molecule and identify phosphate groups, sugar molecules, and nitrogenous bases. Which molecule were they examining?

• carbohydrate

• lipid

• protein

• nucleic acid

What relationship exists between amino acids and proteins?

• Proteins and amino acids bond to form lipids.

• Amino acids are larger molecules than proteins.

• Proteins are made up of amino acids.

• Amino acids form when proteins bond together.

Lactose intolerance is the inability of the human body to digest lactose, a simple sugar found in milk and dairy products. Inhibition of which biomolecule’s function results in lactose intolerance?

• proteins that serve as enzymes

• proteins that act as hormones

• carbohydrates that are important fibers

• carbohydrates that store energy

Tags

NGSS.HS-LS1-1

Which list accurately identifies the biological class (macromolecule) to which each molecule belongs?

• 
• 
• 
• 

Tags

NGSS.HS-LS1-6

The table lists the functions of two types of biomolecules in the human body.

• 1: protein; 2: lipid

• 1: lipid; 2: protein

• 1: lipid; 2: carbohydrate

• 1: carbohydrate; 2: lipid

A student lists the functions of protein in the human body.

Which functions did the student list correctly ?

• 1, 2, and 3

• 1, 3, and 5

• 2, 3, and 4

• 2, 4, and 5

The table identifies four enzymes and their substrates.

Which enzyme catalyzes a reaction that breaks down a potato?

• amylase

• lipase

• protease

• sucrase

Tags

NGSS.MS-PS1-2

Triglycerides are three fatty acids bonded to glycerol as shown in the diagram.

This molecule stores many calories in a small space. What type of organic molecule are triglycerides?

• carbohydrate

• lipid

• protein

• nucleic acid

Why are nucleic acids important for organisms?

• They are stored as fat cells in animals and serve as protection and warmth.

• They store the hereditary information that makes organisms unique.

• They exist in 20 different types that form the building blocks of proteins, necessary for life.

• They form peptide bonds to create very long chains called polypeptides which store energy.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which is an organic compound found in most cell?

• Water (H₂O)

• Glucose ( C₆H₆O₆)

• Oxygen Gas (O₂)

• Carbon Dioxide (CO₂)