ATP Worksheet
(not to be confused with a wigwam)
Part A Chemical Structure of ATP
ATP is a molecule that is produced & consumed in the cell.
There are 3 subunits that comprise ATP; they are ribose,
adenine and phosphoric acid (phosphate)
Look at the following diagrams to answer these questions
1.
1.
What is the molecular formula of ribose?
In the term adenosine, from what molecule does the root:
Adeno come ?
C___ H___O___
2.
What is the ratio of H to O atoms?
3.
To what organic groups does ribose belong?
4.
What is the overall shape of ribose?
5.
What is the molecular formula of adenine?
Ose come ?
2.
What atoms had to be removed to make the ATP
molecule?
3.
What molecule did you make with these atoms?
4.
Is this an example of Hydrolysis or Condensation
Reaction? (hint :the building of ATP)
What atom is present in adenine that was not present
in ribose?
5.
Was this reaction exergonic or endergonic? ? (hint: the
building of ATP)
What atom is present in ribose that is not present in
adenine?
6.
Was this reaction catabolic or anabolic? (hint: the
building of ATP)
7.
What type of bonds are responsible for holding adenine,
ribose & phosphoric acids together?
C___H___N___
6.
7.
8.
What is the molecular formula for phosphoric acid?
H___P___O___
(hint: look at the types of atoms that are involved)
Part B Constructing the ATP Molecule
8.
To what organic group does ATP belong?
The ATP molecule is composed of 1 ribose molecule, 1
adenine molecule & 3 phosphoric acid molecules.
Step 1
Cut out the Adenine and Ribose Piece and join them together.
In order to get them to fit like a jigsaw puzzle, you must cut
out the O-H and H from the respective pieces (cut on the
dotted line). Adenosine is a combination of 2 terms, adenine
and ribose.
Ribose
Step 2
Attach the 1 phosphoric acid (phosphate) to the adenosine,
you must cut out the O-H and H from the respective pieces
(cut on the dotted line). Attach the last 2 phosphoric acids to
each other and the ATP molecule. Tape your ATP molecule
onto a sheet of paper, you should also have 4 H2O taped down
Adenine
Step 3
Construct and an ADP molecule, tape it down on the flip side
of your ATP paper . You should also have 3 H2O and 1
phosphoric acid (phosphate) taped down with the ADP
Phosphoric Acid or Phosphate
Lecture Notes Not a part of the lab
Part C Converting ATP to ADP
The equation is the following
ATP
ADP + Phosphate + Energy
1.
What is the reactant?
2.
What are the products?
3.
Which of the products is responsible for cell being able to do
work?
4.
Is this equation an anabolic or catabolic reaction?
5.
Is this equation an endergonic or exergonic reaction?
6.
Was this equation due to condensation reaction or hydrolysis?
Part D Converting ADP to ATP
ATP can be formed within the mitochondrion of a cell if the reactants are
available, ADP, Phosphate group and Energy
ADP + Phosphate group + Energy
ATP
The ATP-ADP Cycle is an important continuum for all living creatures. Assign
each of the vocabulary terms below to one side of the cycle
1.
Why does a cell want to convert ADP to ATP?
2.
What is the advantage to having a vast supply of ATP in the cell?
3.
From where does the energy come to convert ADP to ATP?
(hint: periods 4,5,6,7A)
ATP
Side 1
4.
What are the reactants?
5.
What is the product?
6.
Is this an anabolic or catabolic reaction?
7.
Is this an endergonic or exergonic reaction?
8.
Was this reaction due to condensation reaction or hydrolysis?
Review Analysis
1.
ADP
List the number AND type of sub-units needed to make:
ATP
ADP
Side 2
Vocab Terms
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
M.
High energy molecule is being built by the mitochondrion
Release of free energy so cell can do work
Endergonic reaction
Exergonic reaction
Condensation Reaction
Hydrolysis reaction
Catabolic reaction
Anabolic reaction
Phosphorylation
Eating snacks or sunlight exposure (if you are a plant)
ATPase
ATP Synthase
De-Phosphorylation