How many ATP molecules are produced from one molecule of glucose during cellular respiration?
Thirty-six.
How many oxygen atoms are produced in the reaction?
18 oxygen atoms.
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p.11
Metabolism

How many ATP molecules are produced from one molecule of glucose during cellular respiration?

Thirty-six.

p.10
Chemical Reactions in Organisms

How many oxygen atoms are produced in the reaction?

18 oxygen atoms.

p.2
First Law of Thermodynamics

What does the first law of thermodynamics state?

Energy cannot be created or destroyed, only transformed.

p.2
Free Energy

What is free energy?

The energy available to do work in a system at constant temperature and pressure.

p.3
Metabolism

What is metabolism?

The chemical reactions taking place within a cell or organism.

p.17
Chemical Reactions in Organisms

What are the products of photosynthesis?

Glucose and oxygen.

p.15
Exergonic Reactions

What can stop exergonic reactions from occurring?

Various factors such as activation energy barriers or unfavorable conditions.

p.12
Covalent Bonds and Energy Levels

What type of energy do the bonds in the products (CO2 and H2O) represent?

Mostly low energy bonds.

p.11
Chemical Reactions in Organisms

What is the chemical equation for the process involving glucose and oxygen?

Glucose + 6 O2 → 6 CO2 + 6 H2O.

p.17
Energy Transfer and Transformation

What allows endergonic reactions to occur?

The coupling of endergonic reactions with exergonic reactions, which release energy.

p.10
Chemical Reactions in Organisms

How many hydrogen atoms are produced in the reaction?

12 hydrogen atoms.

p.7
Entropy and Disorder

What does the growth of an organism signify in terms of entropy?

It causes a net increase in entropy in the universe.

p.10
Chemical Reactions in Organisms

What is the chemical equation for the process involving glucose and oxygen?

Glucose + 6 O2 → 6 CO2 + 6 H2O.

p.9
Chemical Reactions in Organisms

What is the initial reactant in the reaction with oxygen?

Glucose.

p.12
Chemical Reactions in Organisms

What is the chemical equation for the process involving glucose and oxygen?

Glucose + 6 O2 → 6 CO2 + 6 H2O.

p.8
Free Energy

What is free energy (G)?

The amount of energy available to do work.

p.15
Exergonic Reactions

What are exergonic reactions characterized by?

A negative change in free energy (–ΔG).

p.2
Metabolism

What is metabolism?

The set of life-sustaining chemical reactions in organisms.

p.5
Metabolism

Where does the chemical energy within organisms originate?

From solar energy.

p.14
Exergonic Reactions

What is the definition of exergonic reactions?

Exergonic reactions are chemical reactions that release energy, typically in the form of heat or light.

p.6
Second Law of Thermodynamics

What happens to useful energy during energy transfer or transformation?

Some useful energy is lost as heat.

p.10
Chemical Reactions in Organisms

How many carbon atoms are in the reaction?

6 carbon atoms.

p.15
Exergonic Reactions

What are the products of the exergonic reaction involving glucose and oxygen?

Carbon dioxide (CO2) and water.

p.12
Covalent Bonds and Energy Levels

What type of energy do the bonds in glucose primarily represent?

Mostly high energy bonds.

p.6
Second Law of Thermodynamics

What does the Second Law of Thermodynamics state?

The amount of entropy (disorder) in the universe is increasing.

p.17
Endergonic Reactions

What type of reactions are endergonic reactions?

Reactions that require an input of energy, indicated by a positive change in free energy (ΔG).

p.15
Exergonic Reactions

What are the reactants in an exergonic reaction involving glucose?

Glucose and oxygen.

p.12
Covalent Bonds and Energy Levels

What type of bond is formed in glucose?

Covalent bonds.

p.18
Metabolism

What should you be able to do after completing Lecture 21?

Answer the questions related to the lecture content.

p.7
Entropy and Disorder

What happens to entropy in the universe as an organism grows?

There is a net increase in entropy.

p.9
Chemical Reactions in Organisms

What are the products of the reaction involving glucose and oxygen?

6 CO2 and 6 H2O.

p.2
Second Law of Thermodynamics

What is the second law of thermodynamics?

In any energy transfer, the total entropy of a closed system can only increase.

p.17
Chemical Reactions in Organisms

What are the reactants involved in photosynthesis?

Carbon dioxide (CO2) and water.

p.2
Exergonic Reactions

What are exergonic reactions?

Reactions that release energy.

p.4
First Law of Thermodynamics

What is the First Law of Thermodynamics?

The amount of energy in the universe is constant; energy can be transferred or transformed but not created or destroyed.

p.16
Endergonic Reactions

What is the definition of endergonic reactions?

Endergonic reactions are chemical reactions that require an input of energy to proceed, resulting in products that have higher free energy than the reactants.

p.9
Free Energy

What is the change in free energy (ΔG) for the reaction of glucose and oxygen?

It goes from high free energy to low free energy.

p.9
Free Energy

Why does the reaction of glucose and oxygen result in lower free energy?

Because it releases energy as it converts to more stable products (CO2 and H2O).

p.2
Endergonic Reactions

What are endergonic reactions?

Reactions that require energy input to proceed.

Study Smarter, Not Harder
Study Smarter, Not Harder