Macromolecules and Enzymes

Which is a function of this molecule in organism?

• storage of genetic information

• structure and support

• short-term energy storage

• long-term energy storage

Which factor determine the shape and function of a protein?

• the density of ribosomes in the cell

• the peptide bonds between the amino acids

• the order of the amino acids in the peptide chain

• the sequence of phosphate molecules in DNA

Tags

NGSS.HS-LS1-1

Which best describe the function of an enzyme?

• to speed up chemical reactions in cells

• to produce cellular energy

• to produce proteins

• to speed up cell division

Which organisms rely on DNA for protein synthesis?

• all life forms

• only eukaryotes

• only multicellular organisms

• only vertebrates

Tags

NGSS.HS-LS1-1

Lactase is an enzyme that is involve in the breakdown of lactose, the sugar in milk. Which term describes the role of lactase in the digestion of milk?

• substrate

• reactant

• product

• catalyst

Which two factors can change the active site and cause the enzyme to not work well?

• substrate and products

• temperature and pH

• reactants and products

• active site and products

Which of the following is true of enzymes?

• all enzymes are proteins

• most enzymes are proteins

• they are nature's catalyst

• they act like a "lock and key" and are very specific

Which graphs illustrate how an enzyme speed up chemical reactions?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-5

Which molecules are joined together to make proteins?

• nucleic acids

• fatty acids

• amino acids

• acetic acids

Tags

NGSS.HS-LS1-6

Salivary amylase is an enzyme in humans that breaks down starches. What

substance would humans have difficulty digesting without this enzyme?

• lipids

• nucleic acids

• proteins

• carbohydrates