Water and Its Properties Quiz

What is the molecular formula of water?

• H2O2

• H2O

• HO2

• H3O

What type of bond is responsible for the cohesion of water molecules?

• Ionic bond

• Metallic bond

• Hydrogen bond

• Covalent bond

What is the role of water in maintaining temperature in cells?

• It acts as a temperature buffer

• It increases temperature

• It decreases temperature

• It has no effect on temperature

What charge does oxygen acquire in a water molecule due to its electronegativity?

• Slightly positive (δ+)

• Neutral

• Slightly negative (δ-)

• Fully positive

What percentage of a cell's cytosol is composed of water?

• Less than 50%

• 50%

• More than 70%

• 100%

What is the term used to describe water's ability to dissolve a large number of substances?

• Hydrophobic

• Hydrophilic

• Universal solvent

• Cohesive

What forms when the polar regions of a water molecule associate with molecular surfaces that have an opposing charge?

• Hydrophobic shells

• Hydration shells

• Cohesive bonds

• Ionic bonds

What is the role of water in metabolic reactions within cells?

• It acts as a transport medium

• It acts as a reagent and a product

• It forms hydration shells

• It increases surface tension

What is the significance of water's cohesive properties?

• They allow water to dissolve non-polar substances

• They contribute to water's high surface tension

• They prevent water from forming hydrogen bonds

• They reduce water's ability to transport solutes

In vascular plants, how are dissolved nutrients transported?

• Blood plasma

• Hydration shells

• Xylem vessels

• Phloem