Unit 4 Review

The flow of energy in some Australian food chains is modeled in the energy pyramid. Based on the model, which consumers would receive the greatest amount of energy captured by the producers in their food chains?

• Wedge-tailed eagles

• Chuditch

• Ring-tailed opossums

• Eucalyptus trees

Which ecosystem in the diagram would be more likely to survive if a disease killed the grasses?

• The forest ecosystem, because most of the animals can eat other organisms.

• The grassland ecosystem, because several predators compete for food.

• The forest ecosystem, because it has three top predators.

• The grassland ecosystem, because it has many herbivores.

How many organisms in this food web eat only producers?

• 2

• 3

• 4

• 6

A diagram of a marine food chain is provided. Which of the organisms in the food chain transforms energy from the Sun into the food?

• Large sharks

• Marlin

• Shrimp

• Phytoplankton

The chemical formula for photosynthesis is provided Which molecule is missing from the reaction?

• C₆H₁₂O₆

• 6H₂O

• 6O₂

• 6CO₂

The two main products of photosynthesis are ____________ which is used by the cell as an energy source and __________ which is released into the atmosphere as waste.

• Glucose, carbon dioxide

• Oxygen, glucose

• Glucose, oxygen

• Carbon dioxide, glucose

All living things do which of the following?

• Chemosynthesis
• Respiration
• photosynthesis
• all of the answers

What is one of the reactants of cellular respiration?

• energy
• glucose
• carbon dioxide
• water

What type of respiration requires oxygen?

• Aerobic
• Anaerobic

Which of the following is the correct sequence of events in cellular respiration.

• Glycolysis -- Fermentation -- Kreb's Cycle 
• Kreb's Cycle -- Electron Transport -- Glycolysis
• Glycolysis -- Kreb's Cycle -- Electron Transport
• Kreb's Cycle -- Glycolysis -- Electron Transport