Water & Life Review

Water & Life Review

Unit 2: Biochemistry ​

Grade 10 Biology II 2021-2022

Multiple Choice

Where is most of Earth’s water found?

• Ground Water

• Oceans

• Ice Caps & Glaciers

• Lakes

Multiple Choice

What percent of Earth’s water is freshwater?

• 97%

• 68.7%

• 3%

• 0.3%

Multiple Choice

In biochemistry, what is polarity?

• A difference in electrical charge between different parts of the same molecule is called polarity.

• A difference between the North and South Pole on the globe.

• A property that describes magnets.

Multiple Choice

The polarity of water allows water molecules to form countless __________, binding the molecules together. These __________ cause water to have a relatively high boiling point of 100°C.

• Bonds

• Covalent Bonds

• Hydrogen Bonds

• Attractions

Multiple Choice

Why does solid water (ice) float on liquid water?

• Solid water is less dense than liquid water.

• Solid water is more dense than liquid water.

• Solid water and liquid water have the same densities.

Multiple Choice

 Why does an organism's metabolism depend on water?

• Water can dissolve many substances that organisms need.

• Water is necessary for many biochemical reactions in the body.

• Water may be a reactant or product of many reactions. 

• All of these answers. 

Poll

REFLECTION QUESTION: Rate your performance on this Quizizz to review what you read about in the CK-12 assignment Water & Life. (THERE IS NO CORRECT ANSWER.)

• 4 - I think I did really well. 🤩

• 3 - I think I did okay but there are some ideas about water I need to review. 😅

• 2 - I don't think I did so well and I need to review many ideas about water. 🤔

• 1 - I think I did horribly! I'm lost! 😳