1.3

Question 1

What is the most common substance essential to living things?

Answer 1

Water

Question 2

True or False: Water is a polar molecule.

Answer 2

True

Question 3

Fill in the blank: Water has a high __________ capacity, which helps regulate temperature.

Answer 3

heat

Question 4

Which of the following is NOT a property of water? A) Cohesion B) Adhesion C) Density D) Combustibility

Answer 4

D) Combustibility

Question 5

What role does water play in cellular processes?

Answer 5

Water acts as a solvent, helps transport nutrients, and facilitates chemical reactions.

Question 6

True or False: Water can dissolve many ionic and polar substances.

Answer 6

True

Question 7

What is the significance of water’s high specific heat for living organisms?

Answer 7

It helps maintain stable temperatures in organisms and environments.

Question 8

Describe the term ‘hydrophilic’ as it relates to water.

Answer 8

Hydrophilic refers to substances that can interact with and dissolve in water.

Question 9

Fill in the blank: In biological systems, water is essential for __________ and __________ reactions.

Answer 9

metabolic, biochemical

Question 10

What is the main reason why water is essential for life?

Answer 10

Water is vital for maintaining cellular structure, facilitating chemical reactions, and regulating temperature.