Biology Chemistry of Life

Where are buffers found in the human body?

• In the blood

• In the saliva

• In the organs

• In the bones

Tags

NGSS.HS-LS1-3

On the pH scale, which number is neutral?

• 7

• 14

• 0

• 7.4

On the pH scale, which numbers refer to bases?

• 0

• 8-14

• 1-6

• 7

On the pH scale, which numbers refer to acids?

• 8-14

• 0

• 1-6

• 7

This type of bond is formed when electrons from one atom are transferred to another atom.

• Ionic

• Covalent

• Adhesion

• Cohesion

This attraction between water molecules allows for surface tension, where bugs are able to walk on the surface of water.

• Adhesion

• Cohesion

• Ionic

• Covalent

What is the pH of human blood?

• 7.4

• 7

• 0

• 14

When looking at the pH scale, the more H+ (hydrogen) ions in a solution, the more____ it will be.

• Acidic

• Basic

• Buffered

• Ionic

Which of the following solutions has the highest H+ ion concentration?

• a solution with a pH of 1

• a solution with a pH of 4

• a solution with a pH of 7

• a solution with a pH of 10

What is unique about carbon?

• bonding properties

• ability to bond with oxygen

• properties as a reactant

• properties as an enzyme

Tags

NGSS.HS-LS1-6