Biomolecules Quiz

Biomolecules contain a variety of atoms. Which biomolecule maintains a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom?

• lipid

• protein

• nucleic acid

• carbohydrate

Tags

NGSS.HS-LS1-6

All organisms contain DNA and RNA. What are the subunits (building blocks) of DNA and RNA?

• simple sugars

• amino acids

• carbohydrates

• nucleotides

How are the functions of a carbohydrate and a lipid similar?

• Both are a source of energy.

• Both are replicated during meiosis.

• Both lower the activation energy of reactions.

• Both dissolve nutrients in the digestive system.

Which would best distinguish a nucleic acid from a carbohydrate?

• presence of carbon

• presence of phosphorus

• presence of fatty acids

• presence of amino acids

Which is the best example of a monosaccharide, or simple sugar?

• starch

• glucose

• cellulose

• glycogen

Which is a carbohydrate that stores energy in animals?

• insulin

• starch

• glycogen

• hemoglobin

Which subunits (building blocks) make up the structure of all proteins?

• glucose

• amino acids

• carbohydrates

• phospholipids

Tags

NGSS.HS-LS1-1

Which compound is a lipid?

• A. amino acid

• B. enzyme

• C. steroid

• D. vitamin

Why are enzymes essential to organisms?

• They are catalysts for biochemical reactions in cells.

• They provide short term and long term energy for the cells.

• They provide instructions for protein synthesis and determine traits.

• They create semipermeable barriers in the cell that separates the inside and outside of the cell.

Why is the "lock and key" analogy often used to describe enzyme function?

• Each enzyme is the same as its substrate.

• Each enzyme will fit with only one specific kind of substrate.

• Each enzyme can only be used once in a reaction and cannot be used again.

• Each enzyme has its own active site that will not fit with other active sites.