WorksheetsEcology/Macro Review
Total questions: 25
Worksheet time: 40mins
Which of the following are examples of a density independent factors?
forest fire
seasonal cycles
storms
disease
Which organisms have the most available energy in an energy pyramid?
Producers
Consumers
Decomposers
Detritivores
If there are 47,802 calories (energy) available at the producer level of this food chain, how many calories would be available at the tertiary consumer level?
47.802
478.02
4.7802
0
Carbohydrates
Lipids
Proteins
Nucleic Acids
What is the optimal pH for this enzyme?
6
10
9
7
Which of the following best explains why enzymes are necessary for reactions in our cells?
The reactions are too slow to meet the needs of the cell if enzymes are missing.
Enzymes supply the oxygen necessary for the reactions.
Enzymes change reactants from solid to liquid during the reactions.
The reactions take up too much space in the cell if enzymes are missing.
The ____________________ mechanism describes how each substrate must fit into the enzyme.
lock and key
hammer and nail
jigsaw puzzle
seesaw
What is the purpose of an enzyme?
control how many reactions occur
raise activation energy
give permission for the reaction
speed up chemical reactions
Where do substrates bind to an enzyme?
calcium channels
active site
receptor molecules
voltage-gated channels
What is the optimal temperature of this enzyme?
60
40
70
30
Which enzyme represents the substrate?
A
B
C
D
Which letter represents the enzyme?
A
B
C
D
