Biology GMA Study Guide S22 - Part 1

How do enzymes affect the activation energy of a reaction?

• Enzymes lower the activation energy, making the reaction happen faster
• Enzymes raise the activation energy, making the reaction more explosive
• Enzymes lower the activation energy, making the reaction happen slower and more controlled
• Enzymes raise the activation energy, making the reaction happen faster

What is homeostasis?

• A way that consumers get energy and food
• An internal balance
• The name of a location where an organism lives
• Another way of saying heterozygous

Which of the following are NOT part of the 8 characteristics of life?

• moves
• uses oxygen/breathes
• requires water
• made of cells
• grows & develops

Which of the following correctly match up examples? Mark all that apply.

• producer = plant
• consumer = heterotroph
• autotroph = plant
• decomposer = bacteria
• plants = 1st trophic level

How much energy will be in the secondary consumer level if the producers star with 122,016 J of energy?

• 122,016 J
• 12,201,600 J
• 1220.16 J
• 61,008 J
• 244,032 J

What percentage of energy transfers from one trophic level to the next in an energy pyramid?

• 90%
• 10%
• 1%
• 50%
• 2%

What is the ultimate source of energy for most food webs on Earth?

• Sun
• Lightning
• Radioactive decay in the Earth's core
• Sugar