Ch. 6 - Energy & Metabolism

  The initial input of energy in chemical reactions is

• Transition site

• Activation energy

• Entropy

• Enthalpy

Kinetic energy refers to -

• Energy that is stored

• Energy that is destroyed

• Energy in motion

• Energy that is created

The first law of thermodynamics states that energy can be –

• Created

• Destroyed

• Lost as heat

• All of the above

The energy in a system that is unable to do work—

• Enthalpy

• Free energy

• Kinetic energy

• Entropy

ATP is composed of how many phosphates?

• 1

• 2

• 3

The removal of electrons from an atom or a molecule is reduction.

• True

• False

Which of the following is an example of kinetic energy?

• A sugar molecule in the stomach

• A glucose molecule in a leaf

• A contracting muscle

• A starch molecule in a potato

A reaction with a negative ∆G is –

• Exergonic

• Entropic

• Endergonic

• Enthalpic

An endergonic reaction -

• Takes in energy

• Releases energy

A catalyst speeds up chemical reactions. How do catalysts do this?

• Decreasing entropy

• Altering ∆G

• Consuming reactants

• Making different products

• Lowering activation energy