WorksheetsConcept 2
Total questions: 16
Worksheet time: 16mins
Which macromolecule found in the food you eat will your cells break down first to get ATP?
carbohydrates
lipids
proteins
nucleic acids
Which phrase best describes the function of the ATP molecule?
absorbs energy
increases energy
stores energy
creates energy
Energy is released from an ATP molecule for cellular processes when it
converts a phosphate group to ADP
attaches an extra phosphate group
produces a sugar molecule
loses a phosphate group
Which of the following reactions directly provides chemical energy for most cell functions?
ADP -> ATP + P
ADP + P -> ATP
ATP + P -> ADP
ATP -> ADP + P
Where does your body get the energy for reattaching a third phosphate to ADP, creating ATP?
from nucleic acids
usually from carbs
from breaking ATP
from the sun
What is the main currency for the cell?
ATP
ADP
endothermic
exothermic
How many phosphate groups does ATP have?
1
2
3
4
How is energy released in the ATP-ADP cycle?
when cells join together
when a phosphate group is removed
when a phosphate group is added
when ADP is recycled
Which reactions allows energy to be taken in?
endothermic
exothermic
Which is least likely to be broken down for energy?
carbs
lipids
proteins
ribose
What is ATP?
An energy-carrying molecule that carries/stores energy for
cell functions
more energy is released than absorbed
more energy is absorbed than released
speed up reactions by lowering the activation energy needed.
Explain what the energy is used for when a phosphate
is removed, and where that energy initially comes from.
active transport, cell division, or other cellular processes. initially comes from glucose (carb)
When consumed food gets broken down during cellular
respiration, the energy gets stored in ATP by adding a 3rd
phosphate back on to ADP.
ATP is really unstable, so it doesn’t take a lot of energy to
break the bond between the 2nd and 3rd phosphates.
it is considered an
endothermic process.
Why is the overall process of breaking
down ATP is considered an exothermic process,
while the overall process of forming ATP is
considered an endothermic process?
Energy is released when bonds are formed.
Energy is absorbed when bonds are broken.
A reaction that overall releases more energy (in the form of heat
or light) than it absorbs.
A reaction that overall absorbs more energy (in the form of heat
or light) than it releases.
it does not take a bunch of energy to break off the phosphate so more energy is released and when the phosphate connects back more energy is absorbed so it is endothermic.
What is the purpose of ATP?
the main energy currency for the cell
stores energy in photosynthesis
carries energy in a usable form for the cell wherever it
is needed
What is recycled in the ATP-ADP Cycle?
ATP
ADP
proteins
energy
How many phosphates does ADP have?
1
2
3
4
