ATP, adenosine triphosphate, the energy currency of all cells. Remember our characteristic of life is that all living things need energy for metabolic processes, and that energy comes in the form of a very special molecule called ATP or adenosine triphosphate. ATP is the product of aerobic cellular respiration. Let's take a look at the structure of ATP and figure out where all this energy comes from. Basically, you can look at an ATP molecule and see that it has three main parts. It has an adenine base. An adenine base contains the element nitrogen and that should sound familiar to you, because remember adenine is one of the nitrogen bases that are also found in DNA and in RNA. So here we have the nitrogen base, adenine. It's attached to a ribose sugar, five-carbon sugar. What makes this molecule unique is the addition of one, two, three, tri... Three phosphate groups. Now let's look at this picture for a minute. Notice that I've got a straight line here joining the adenine and the sugar. If you think back to your chemistry, you know that we often represent chemical bonds with straight lines. We also remember from our chemistry that energy is stored in chemical bonds, so when you break a bond, you release energy. But look here, adenosine triphosphate, I've attached the phosphates not with a straight line but with wavy lines. These are high energy bonds. They contain more chemical energy than a regular chemical bond we represent with a straight line. And notice the last one, this would be called adenosine monophosphate. This would be called adenosine diphosphate but when I have all three, you'll notice the triphosphate has a wavy line with many more crests in it. That's because this bond has the highest energy of all. In fact, it contains 7 kilo-calories of energy. When ATP is used by a cell for its metabolic activities, the cell takes these molecules and breaks that bond, and when it breaks that bond all that energy is released for cells' use. Again, ATP, adenosine triphosphate, has three main parts: A nitrogen base, adenine; a five-carbon sugar, and three phosphate groups. Cells break off that last phosphate group and release the energy that's found in that high energy phosphate bond.

Question

ATP, adenosine triphosphate, the energy currency of all cells. Remember our characteristic of life is that all living things need energy for metabolic processes, and that energy comes in the form of a very special molecule called ATP or adenosine triphosphate. ATP is the product of aerobic cellular respiration. Let's take a look at the structure of ATP and figure out where all this energy comes from. Basically, you can look at an ATP molecule and see that it has three main parts. It has an adenine base. An adenine base contains the element nitrogen and that should sound familiar to you, because remember adenine is one of the nitrogen bases that are also found in DNA and in RNA. So here we have the nitrogen base, adenine. It's attached to a ribose sugar, five-carbon sugar. What makes this molecule unique is the addition of one, two, three, tri... Three phosphate groups. Now let's look at this picture for a minute. Notice that I've got a straight line here joining the adenine and the sugar. If you think back to your chemistry, you know that we often represent chemical bonds with straight lines. We also remember from our chemistry that energy is stored in chemical bonds, so when you break a bond, you release energy. But look here, adenosine triphosphate, I've attached the phosphates not with a straight line but with wavy lines. These are high energy bonds. They contain more chemical energy than a regular chemical bond we represent with a straight line. And notice the last one, this would be called adenosine monophosphate. This would be called adenosine diphosphate but when I have all three, you'll notice the triphosphate has a wavy line with many more crests in it. That's because this bond has the highest energy of all. In fact, it contains 7 kilo-calories of energy. When ATP is used by a cell for its metabolic activities, the cell takes these molecules and breaks that bond, and when it breaks that bond all that energy is released for cells' use. Again, ATP, adenosine triphosphate, has three main parts: A nitrogen base, adenine; a five-carbon sugar, and three phosphate groups. Cells break off that last phosphate group and release the energy that's found in that high energy phosphate bond.

Close
Question 1
ATP is used for ________ in all cells.
Responses
A reproductionreproduction
B energyenergy
Question 2
"TP" stands for what part of the ATP molecule?
Responses
A tri-proteintri-protein
B tri-phosphatetri-phosphate
C tri-politri-poli
Question 3
The third phosphate group is attached to the ATP molecule with a high energy ___________.
Responses
A bondbond
B force
Answer the following 3 questions only with the responses provided!

Answer 1

Question 1: B - energy

Question 2: B - tri-phosphate
Question 3: A - bond

Answer 2

Question 1: B - energy

Question 2: B - tri-phosphate
Question 3: A - bond

Answer 3

Question 1: ATP is used for ________ in all cells.

Response: B - energy

Question 2: "TP" stands for what part of the ATP molecule?
Response: C - tri-phosphate

Question 3: The third phosphate group is attached to the ATP molecule with a high energy ___________.
Response: A - bond