Macromolecules

Two of the four principle classes of organic compounds are proteins and nucleic acids. What is the relationship between proteins and nucleic acids?

• Nucleic acids use proteins for energy

• Nucleic acids are a subset of proteins

• Proteins are long polymers of nucleic acids

• Nucleic acids contain the information to make proteins

Tags

NGSS.HS-LS1-1

Resistance to antibiotics results from variations in the genetic code of Streptococcus pneumoniae. Which type of molecule encodes genetic information in Streptococcus pneumoniae?

• carbohydrate

• fatty acid

• nucleic acid

• protein.

Tags

NGSS.HS-LS3-2

Which of the following diagrams above is an example of a carbohydrate?

• 1

• 2

• 3

• 4

In living organisms, lipids function mainly as:

• Sources of stored energy and transmitters of genetic information

• Sources of stored energy and components of cellular membranes

• Transmitters of genetic information and catalysts of chemical reactions

• Catalysts of chemical reactions and components of cellular membranes

Study the diagram above of the cell membrane. What is the building block of structure G?

• nucleotide

• fatty acids

• amino acids

• monosaccharides

Which macromolecule makes up the majority of the cell membrane?

• nucleotide

• lipid

• protein

• carbohydrate

Which macromolecule is not labeled on the cell membrane above?

• nucleic acid

• protein

• lipid

• carbohydrate

Baby food manufacturers sometimes use proteases in their products. Proteases catalyze the breakdown of the proteins in these foods, making digestion easier for infants. Proteases are which of the following types of molecules?

• enzyme

• fatty acid

• carbohydrate

• nucleic acid

Ovalbumin is a protein found in eggs. Which of the following best describes the molecular structure of ovalbumin?

• a group of six carbon atoms joined in a ring

• a chain of amino acids folded and twisted into a molecule

• a set of three fatty acids attached to a molecule of glycerol

• a sequence of nitrogenous bases attached to a sugar phosphate backbone

Tags

NGSS.HS-LS1-1

Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule?

• protein

• carbohydrate

• nucleic acid

• lipid