Biochemical Reactions
Enzymes
ATP
EF through ecosystems
Food Webs and food chains
100
- Write the equation for cellular respiration. (underline the products)
- What type of reaction is it?
C6H12O6 + 6O2 --> 6H2O + 6CO2
Exothermic
100
The activation energy is reduced in the presence of a __________.
catalyst
100
What is ATP and where in our body is it made?
Molecule that stores energy that our body can use; mitochondria.
100
Organisms that use energy from the sun to make their own food. (Two?)
Autotrophs or Producers
100
What direction does energy flow in a food pyramid?
only UP!
200
If the activation energy of a reaction is lowered then the reaction will happen ____________.
faster
200
A molecule that binds with an enzyme is called a _________.
substrate
200
How is energy released from an ATP molecule?
The bond between the last to phosphate molecules is broken.
200
Any organism that is not a producer is called a __________.
Heterotroph
200
What would be the direct effect of a decrease in the number of grasshoppers?
The frog population would decrease. The rat population would disappear because grasshoppers are their only source of energy.
300
Which type of reaction absorbs more energy then it releases?
Endothermic reaction
300
Draw a enzyme substrate complex in 3-4 steps (the result should be 2 products)
300
Which molecule is recycled in the ATP-ADP cycle?
ADP
300
An organism that consumes both grass and grasshoppers is classified as a ___________.
Omnivore
300
Describe the Rule of 10.
Only 10% of the energy is available to the next trophic level. The other 90% is either used or lost as heat.
400
Draw an exothermic energy diagram.
- Label the product (P), the Reactants (R), and the activation energy.
400
Oops, wrong column...What is the process called that converts food energy into into ATP? (Think of how we get the energy to add the P onto the ADP)
Cellular respiration
400
Label the following diagram.
A: Adenine
B: Ribose
C/D: Phosphates
400
All food chains begin with what?
Producers.
400
A. Draw a food pyramid using Algae --> Fish --> Otter.
B. Label each trophic level.
C. Circle the animal with the least amount of energy avalaible.
A. Algea at the bottom, Otter at the top.
B. Producer (bottom), Primary Consumer (middle), Secondary Consumer (top)
C. Otter