Biomolecules, Enzymes, and DNA

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.MS-LS1-7

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Tags

NGSS.MS-LS1-7

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusable
• catalyst
• specific
• fragile

Any substance that is acted upon by an enzyme is called a(n)?

• Coenzyme
• Substrate
• Vitamin
• Polypeptide

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

• a substrate
• an enzyme
• a product
• an active site

Tags

NGSS.MS-LS1-7

Letter D...

• active site
• enzyme
• substrate
• products

Tags

NGSS.MS-LS1-7

Letter B...

• active site
• enzyme
• substrate
• products

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

Letter C...

• active site
• enzymes
• substrate
• products

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCl), and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine?

• It becomes inactive.

• It begins to replicate.

• It's shape changes to engulf large proteins.

• It's activity increases to digest more proteins.