Because water has high specific heat... A. Water can change temperature more quickly than other substances. B. Water can stick to other water molecules C. Water can dissolve many substances D. Water will not change temperature as easily as other substances

In the human body,the -log of the hydrogen ion concentration ([H+]) is regulated by  a. pH b. Acidity c.Alkalinity d.Bicarbonate ion e. Buffer system

The following is a property of acids, bases, or neither ? Produce H2 from metals OA. acids B. bases OC. neither O D. both

explain how the Avery/Hershey Chase experiments proved that DNA is the genetic material.       Is a “trans-fat” a saturated fat, an unsaturated fat or neither? Explain.   Describe three properties of water, and how these properties play a role in the lives of living organisms.

The inside of a cell contains several buffers. These buffers help ensure that Select one: a. pH inside the cell changes rapidly to balance pH changes outside the cell b. pH inside the cell remains at equilibrium with the pH outside the cell c. pH inside the cell changes rapidly to help maintain the environment outside the cell d. pH inside the cell remains stable when extracellular pH changes

Two or more chemical compounds that have the same formula, but have different structures are known as...? isotopes reducing agents isomers antioxidants enzymes

A base a. has a value below 7 on the pH scale. b. is a chemical that adds hydrogen ions to a solution. c. has a value of 7 on the pH scale. d. is a chemical that absorbs hydrogen ions from a solution.

You are stranded on a lifeboat with several other people in the middle of the ocean.  You have run out of clean drinking water and are very thirsty.  The others have started to drink the seawater to quench their thirst. Since you’re waiting for rescue (and are a top notch AP Biology student), you decide to solve a couple of water potential problems to determine if drinking sea water is a good idea or not.  a) The majority of dissolved ions in seawater is NaCl, roughly a 0.5M concentration.  The ionization constant of NaCl is 2.0.  Calculate the solute potential for seawater if you know that the water is 2°C. b) Your own cells have a 0.15M concentration.  Calculate the solute potential for your own cells, knowing that body temperature is 37°C. c) Using your knowledge about water potential, if you drink the seawater, wat will happen when the seawater comes into contact with your body’s cells? Note: ΨP for animal cells is zero

One of the most important properties of water is that it can form a _______ with other water molecules. This means that water molecules are able to “stick together” to a certain extent. The term for this property is cohesion. A. Ionic bond B. Covalent Bond C. Hydrogen Bond

Which of the following is removed when tea is brewed in hot water? A. Cellulose B. Tannins C. Glucose D. Caffeine E. Sodium bicarbonate