Chapter 6 & 7
Where does glycolysis take place within the cell?
cytoplasm
Which of the following statements most accurately describes the first law of thermodynamics?
energy can be neither created nor destroyed but it can be changed from one form to another.
Cellular respiration is an aerobic process. This means that it
requires oxygen.
What is a metabolic reaction called that involves one reaction releasing energy to provide energy for a second reaction that requires energy?
a coupled reaction.
Cellular respiration involves all of the following except
breathing in and out.
Which molecules are the products of aerobic respiration?
carbon dioxide and water
The largest number of ATP molecules are produced in which phase of cellular respiration?
electron transport chain
The amount of energy available to do work after a chemical reaction has occurred is called
free energy.
Which of the following is a substrate of cellular respiration?
glucose
What is the correct order of phases in cellular respiration?
glycolysis, prep reaction, citric acid cycle, electron transport chain
Where within the cell is ATP built up?
mitochondria
Muscles undergo fermentation when
no oxygen is available.
Which molecules are the reactants or substrates for aerobic respiration?
oxygen and glucose
Pyruvate can be converted to lactate instead of going to the preparatory reaction. Why does this occur?
oxygen is not available
The final acceptor for hydrogen ions in aerobic cellular respiration is
oxygen.
The high energy bond in ATP is found in or between
the phosphate groups.
The energy difference between the reactant glucose and oxygen molecules and the product water and carbon dioxide is 686 kilocalories, yet the 36 ATP molecules produced are only storing 263 kilocalories in their outermost phosphate bond. The rest of the energy went
to provide heat that is soon lost from the organism.
ATP can be broken down into
ADP plus phosphate plus energy.
Ultimately, humans get their energy from the sun.
True
When heat dissipates into the environment, it is no longer usable by the individual who produced it.
True
Which statement most accurately describes the second law of thermodynamics?
Energy cannot be changed from one form to another without a loss of usable energy.
What role does NAD+ play in cellular respiration?
It is an electron carrier.
Which energy association is correct?
Kinetic energy is energy of motion.
We often say that we need food for energy. In a biological sense, is this correct?
Yes, because the food we eat has potential energy in its structure and this chemical energy can be converted into mechanical energy.
