Chapter 2 Mod 3 Section 2.05-2.07

Which of the following is true regarding hydrolysis reactions?

Water is added and building blocks are released.

Match the following: AB + C → AC + B

Exchange reaction

Catabolic reactions involve __________.

A release of energy

Which atom is present in each unlabeled corner of this simplified structure diagram?

Carbon

Which of the following is false regarding carbon?

Carbon contains six valence shell electrons.

Which of the following is true concerning the rates of chemical reactions?

Chemical reactions progress most rapidly when the reacting particles are present in high numbers because their chance of successful collisions is greater.

Which of the following factors would speed up the rate of a chemical reaction?

High concentration of reacting particles

Lemon juice is more acidic than coffee because

Lemon juice has a higher concentration of hydrogen ions and therefore a lower pH value compared to black coffee

The reaction shown is of what type?

Synthesis

Which of the following types of chemical reactions always involves atoms or molecules combining to form a larger, more complex molecule?

Synthesis

Match the following: A + B → AB

Synthesis reaction

When a cell is placed in a solution that is more concentrated, water will leave the cell and the cell will shrink. What will happen to the rate of intracellular chemical reactions in this situation?

The rate of chemical reactions will speed up.

In biochemistry, and thus in the body, the universal solvent is

Water

All ions are __________.

electrolytes

Something with a pH of 5 would

have more H+ ions than OH- ions

pH is a concentration unit used to measure the concentration of __________.

hydrogen ions in a solution

Buffers tend to prevent dramatic changes in the pH when __________ are added to a solution.

proton donors or proton acceptors