Jeckel ERS #2 Sp24

If the original solution has a pH of 7 and the new solution has 100 times more hydroxide ions, what is the new pH?

• 5

• 8

• 9

• 10

Which one correctly describes hydrolysis?

• Adding a water molecule to form bonds.

• Adding a water molecule to break bonds.

• Losing a water molecule to form bonds.

• Losing a water molecule to break bonds.

If you put salt on a slug, what will happen to the slug?

• Water will leave the slug, the slug will shrivel up.

• Water will enter the slug, the slug will swell up.

• Nothing will happen.

• The salt will be absorbed into the slug.

Which of the following is FALSE about osmosis?

• Water moves from high to low water concentration.

• Water moves through aquaporins.

• It is passive transport.

• Water moves towards the solution with less solute.

True/False: Diffusion is a form of active transport.

• True

• False

What is the difference between primary and secondary active transport?

• Primary uses energy directly and secondary uses energy directly.

• Primary does not use energy and secondary does.

• Primary uses energy directly and secondary uses energy indirectly.

• Primary uses energy indirectly and secondary uses energy directly.

The phospholipid bilayer is amphipathic. This means that there are both hydrophobic regions and hydrophilic regions. Which of these statements are correct?

• The phospholipid heads are hydrophobic.

• The phospholipid heads are hydrophilic.

• The bilayer does not spontaneously form.

• Phospholipids are proteins.

Which of the following can freely diffuse through the cell membrane?

• Oxygen

• Hydrogen ions

• Large volume of H2O

• Potassium ions

True/False: Enzymes lower activation energy.

• True

• False

True/False: Non-competitive/allosteric enzyme inhibition can be corrected by adding more substrate.

• True

• False