Chemistry in Living Systems Review

How many bonds can carbon form with other atoms?

• 1

• 2

• 3

• 4

One link in a chain would be considered a _____ while the entire chain would be considered a _____.

• Monomer; polymer

• Polymer; monomer

• Monomer; monomer

• Polymer; polymer

Why is the 3D shape of a protein so important?

• It determines the protein's color.

• It determines the protein's function.

• It determines the protein's size.

• It determines the protein's weight.

What is the job of the cell membrane?

• To provide energy

• To control what enters and leaves the cell

• To produce proteins

• To store genetic information

During passive transport, molecules move from ____ concentration using ____.

• Low to high; energy

• High to low; no energy

• Low to high; no energy

• High to low; energy

What happens to the atoms and bonds in the reactant as the reaction takes place?

• They remain unchanged

• They are rearranged

• They disappear

• They multiply

What are two factors that can denature a protein?

• Temperature and pH

• Light and sound

• Pressure and volume

• Color and texture

If an enzyme is denatured, what will likely happen to its reaction?

• It will speed up

• It will slow down or stop

• It will remain unchanged

• It will explode

Which type of reaction is shown here, and do reactants or products contain more energy?

• exothermic; reactants have more energy

• exothermic; products have more energy

• endothermic; reactants have more energy

• endothermic; products have more energy

What is the overall energy change in a reaction when an enzyme is present?

• There's an increase in the energy required

• There's a decrease in the energy required

• There's no change in the energy required

• The energy required is doubled