Biomolecules Pre-Assessment Practice

A portion of a DNA molecule is shown in the diagram.

Which statement best describes the main function of this type of molecule?

• It is a structural part of the cell wall.

  
  

• It stores energy for metabolic processes.

  
  

• It determines  what traits may be inherited.

  
  

• It transports materials across the cell membrane.

  
  

The cross country team is planning to get together the night before the meet for a spaghetti meal. Pasta is high in starch, which can be easily broken down into simple carbohydrates. What is the purpose of carb loading prior to a high intensity round of exercises?

• To provide additional muscle structure

  
  

• To provide easily available energy

  
  

• To provide extra insulation for the body

  
  

• To prevent mutations to the genetic information

  
  

Lemurs’ bodies are adapted to efficiently store energy for times when food is scarce. This adaptation may help to explain how lemur ancestors survived the trip across the Mozambique Channel from mainland Africa to Madagascar. Which of the following types of molecules would be MOST beneficial to the lemurs’ journey?

• Lipids

• Monosaccharides

• Nucleic Acids

• Proteins

A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available energy but few excess calories. Which nutrition label lists the best combination of biomolecules that provide quickly available energy while providing the fewest calories from other types of biomolecules?

• 
• 
• 
• 

Which of the following is NOT a function of protein?

• Produces energy

  
  

• Makes enzymes

  
  

• Build and repair tissues

  
  

• Makes hormones

  
  

The two types of nucleic acids are__________and_________.

• chlorophyll and retinal.

  
  

• DNA and RNA.

  
  

• lipids and sugars.

  
  

• glucose and glycogen.

  
  

Which statement concerning simple sugars and amino acids is correct?

• They are both wastes resulting from protein synthesis.

  
  

• They are both building blocks of starch.

  
  

• They are both needed  for the  synthesis of larger molecules.

  
  

• They are both stored as fat molecules in the liver.

  
  

A table showing some data about a macromolecule is shown in picture.

A scientist analyzes the chemical composition of a macromolecule and collects the data from table. Which type of macromolecule was he examining?

• Carbohydrate

• Lipid

• Nucleic Acid

• Protein

Which biomolecule contains the elements CHON? (select 2)

• carbohydrates

• lipids

• proteins

• nucleic acids