Water Properties & Enzymes Practice Test

An enzyme _____ the activation energy to speed up a chemical reaction.

An appropriate enzyme to catalyze a reaction involving the imaginary substance camelsine would be ___.

The charge of the oxygen atom that makes up water is slightly ___.

A substance that produces an excess of hydroxide (OH-) ions in water is a [blank_start]base[blank_end].

Water is classified as a [blank_start]polar[blank_end] molecule because it has a negatively charged oxygen and positively charged hydrogens.

A substance that produces an excess of hydrogen (H+) ions in water is a(n) [blank_start]acid[blank_end].

The term hydrophobic means water fearing.

The type of bond which holds water molecules to each other is called a [blank_start]hydrogen bond.[blank_end]

A pH of 7 signifies?

The polar compound which is the universal solvent and has the unique properties of adhesion, capillary action, and cohesion is [blank_start]water[blank_end].

Which of the following is NOT a property of water?

A protein catalyst that speeds up the chemical reaction within an organism

Drag and Drop the labels to their appropriate part.

A water molecule is made up of [blank_start]2[blank_end] hydrogen atoms and [blank_start]1[blank_end] oxygen atom.

Water’s ability to stick to itself is [blank_start]cohesion[blank_end],

Water striders have the ability to walk on water because of [blank_start]surface tension[blank_end].

Which property of water does NOT play a role in water's ability to climb the xylem of a plant?

Water can hang as a dew drop from the underside of a leaf due to [blank_start]adhesion[blank_end].

Water is known as a universal solvent because

The properties of water make it essential for supporting life on Earth. One of its properties helps it to act as a buffer for temperature changes, which stabilizes the environment for creatures that live in water. Which property is this?

What binds to the enzyme at the active site?

What environmental conditions can cause an enzyme to denature?

Most Enzyme names end in -ase.

Enzymes are not reusable after a chemical reaction.

Inhibitors that bind to an enzyme and alters the shape of the active site are called [blank_start]noncompetitive[blank_end], while inhibitors that bind and block active site are called [blank_start]competitive[blank_end].

The optimal pH of Chymotrypsin is [blank_start]7.5[blank_end].