Biomolecules Spiral Back

A student makes a Venn diagram to compare the functions of carbohydrates and lipids.

Which cellular function of carbohydrates and lipids should be placed in the shared section of the Venn diagram.

• Hormone production

• Structural support of cell walls

• Energy storage

• Catalyst for chemical reactions

Answer explanation

Lipids store long term energy and carbohydrates store short term energy. Therefore; their shared function is energy storage.

Tags

NGSS.HS-LS2-3

The function of an enzyme in a biochemical reaction is to -

• Raise the temperature of the system

• Speed up the rate of the reaction

• Increase the amount of the substrate added

• Change the type of product formed

Answer explanation

Enzymes acts as catalysts in reactions, meaning they speed them up.

Tags

NGSS.HS-PS1-5

Which statements best compare a function of proteins in a human cell?

• Proteins provide energy for cellular processes

• Proteins catalyze chemical reactions inside the cell

• Proteins store generic information for cells.

• Proteins provide long term energy for cells.

Answer explanation

Enzymes are proteins, and enzymes speed up or catalyze reactions.

Tags

NGSS.HS-LS2-3

A table of four types of carbohydrates in shown.

Which list correctly matches the functions of the types of carbohydrates?

• Energy: glycogen and starch

  Structure: cellulose and chitin

• Energy: cellulose and chitin

  Structure: glycogen and starch

• Energy: chitin and glycogen

  Structure: cellulose and starch

• Energy: cellulose and starch

  Structure: chitin and glycogen

Answer explanation

glycogen and starch are both sugars meaning that they both provide energy.

An advertisement for a health supplement for dogs claims to build lean muscle an strengthen tendons ad ligaments, as well as provide energy. Which two biomolecules must the supplement contain to provide these benefits.

• Carbohydrates and lipids

• Proteins and carbohydrates

• Nucleic acids and carbohydrates

• Lipids and nucleic acids.

Answer explanation

Proteins provide materials for growth and development, while carbs provide short term energy.