Midterm Spring 2025

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

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

Tags

NGSS.MS-LS2-2

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.MS-LS1-7

The nucleus is the

• Power house of the cell

• Waste collector in the cell

• Control center of the cell

• protein factory in the cell

Tags

NGSS.MS-LS1-2

Enzymes provide a site where reactants called substrates can be brought together in an enzyme-catalyzed reaction. The site is called the

• enzyme substrate complex.
• reaction site.
• active site.
• lock and key.

The main function of rough ER is

• Fat production

• Protein production

• Breaking down alcohol and drugs

• Delivering proteins to Golgi Body

Tags

NGSS.MS-LS1-2

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

Who is the closest relative to the birds?

• crocodiles
• sharks
• fish
• amphibians

Tags

NGSS.MS-LS4-2

In the diagram, what is letter A? 

• product
• substrate
• enzyme-substrate complex
• active site

What is multicellular? 

• one cell 
• no cells 
• many cells 
• no nucleus 

Tags

NGSS.MS-LS1-1