a1.1 study guided water

What are the challenges and opportunities of water as a habitat?

The challenges of water as a habitat include its constantly changing environment and potential for limited resources, while its opportunities include supporting diverse species and enabling various ecosystems to thrive.

ow do the various intermolecular forces of attraction affect biological systems?

The intermolecular forces of attraction in biological systems influence processes like dissolving, bonding, and structure formation, which are crucial for functions like digestion, cell interactions, and maintaining tissue integrity.

Discuss the major components of blood plasma and their relationship with water.

The major components of blood plasma, such as ions, nutrients, hormones, and waste products, are dissolved or suspended in water, allowing them to be transported throughout the body.

A phrase to remember is "like dissolves like." Use this phrase to explain why water is called the universal solvent when in actuality it is not.

The phrase "like dissolves like" explains that water can dissolve many substances that are similarly polar or charged, but it cannot dissolve non-polar substances, which is why it's not truly a universal solvent.

Explain why water is a "polar" molecule.

Water is a "polar" molecule because its oxygen atom attracts electrons more strongly than its hydrogen atoms, causing an uneven distribution of charge.

Contrast the physical properties of water with those of air and Compare the consequences of animals that live in water versus those that live in air or on land.

Water is denser and offers more resistance compared to air, which affects the movement and support of aquatic animals differently from those living in air or on land.

Give an example of water being used as a transport medium in animals.

Water is used as a transport medium in animals through the bloodstream, carrying nutrients and oxygen to cells and removing waste products.

Give an example of water being used as a transport medium in plants

Water is used as a transport medium in plants through the xylem vessels, carrying water and nutrients from the roots to the rest of the plant.

What physical and chemical properties of water make it essential for life?

Water's ability to dissolve many substances, its role in regulating temperature, and its cohesive nature are essential for supporting life.

Explain how water helps to maintain body temperature in humans.

Water's high heat capacity allows it to absorb and release heat slowly, helping to stabilize and regulate body temperature in humans through processes like sweating and blood circulation.

Molecules that are attracted to water are ________while those that "fear" or are repelled by water are______.

hydrophilic, hydrophobic

Water is able to dissolve other_____________molecules like itself.

polar

Draw two water molecules and label the following: the H, O, hydrogen bond and covalent bond locations and where the partial charges are located

2 h 1 o

Distinguish between adhesion and cohesion.

Adhesion is the attraction between different substances, while cohesion is the attraction between molecules of the same substance.

What biological processes only happen at or near surfaces

Biological processes like gas exchange in lungs and nutrient absorption in intestines primarily occur near surfaces.

How does evaporation from animals and transpiration from plants bring about cooling?

Evaporation from animals and transpiration from plants cool the surfaces by using heat energy to convert water into vapor, thus reducing the surrounding temperature.

What is the chemical formula for water?

H2O.