Enzymes/Energy Chapter 4

Exergonic reactions produce energy. Which of the following is an example of this?

• electrolysis of water

• photosynthesis

• protein synthesis

• building of complex molecules from simpler ones

• breaking glucose down

How is the energy in a molecule measured?

• length

• In calories

• number of atoms

• weight

• temperature

Which is true about Oxidation-Reduction?

• These reactions do not have to be coupled.

• When an atom or molecule gains electrons, it is oxidized.

• When an atom or molecule loses electrons, it is reduced.

• For one molecule to lose an electron, it has to give it to another molecule.

What is the definition of entropy?

• Order

• Linear

• Multidirectional

• Non-linear

• Disorder

When the enzyme is saturated, it means that?

• The rate of the reaction will increase

• The reaction will stop

• The rate of the reaction will remain the same even when more substrate is added

• The rate of the reaction will decrease

Which of the following is not true about Enzyme Activity?

• measured by pH

• influenced by pH

• influenced by temperature

• measured by the rate at which substrate is converted

• influenced by concentration of enzyme and substrate

Which body fluid is acidic?

• Stomach fluid

• Blood

• Saliva

• Small intestine content

• Tears

Energy must be used as

• adipose

• ATP

• fructose

• sucrose

• glucose

Which one of these is not an enzyme?

• Sucrose

• Lipase

• Proteases

• Lactase

When the reactants on one right side of the equation get higher than the left side, the speed of the reaction

• increases

• reverses

• evens out

• decreases