Biology EOC Review Insights

This video is part of a series aimed at helping students prepare for the biology end-of-course exam in North Carolina. It covers ecosystems, including energy flow, nutrient cycles, and ecological relationships. The video also discusses adaptations, trophic levels, and human impacts on the environment, such as pollution and global warming. Key concepts like the nitrogen cycle and the difference between global warming and ozone depletion are highlighted.

What percentage of the biology end-of-course exam in North Carolina is focused on ecosystems?

• 10-15%

• 25-30%

• 33-38%

• 18-22%

Which process do plants use to take in carbon dioxide?

• Nitrogen fixation

• Cellular respiration

• Photosynthesis

• Transpiration

What is the primary source of energy for all ecosystems on Earth?

• Decomposers

• Soil nutrients

• Water

• The Sun

What percentage of energy is typically lost when moving up one trophic level in an ecosystem?

• 90%

• 25%

• 10%

• 50%

Which type of organism can produce its own food through photosynthesis?

• Autotrophs

• Heterotrophs

• Decomposers

• Carnivores

Which cycle is often the least discussed in biology classrooms but is crucial for making proteins and DNA?

• Oxygen cycle

• Nitrogen cycle

• Water cycle

• Carbon cycle

What is the main reason for organisms going extinct or becoming endangered?

• Invasive species

• Overpopulation

• Habitat destruction

• Global warming

What has contributed most to the overall warming of Earth's atmosphere?

• Agricultural runoff

• Burning of fossil fuels

• Deforestation

• Ozone depletion

What type of relationship benefits both organisms involved?

• Mutualism

• Commensalism

• Predation

• Parasitism

What is the main cause of ozone layer depletion?

• Agricultural practices

• Deforestation

• Use of CFCs

• Burning of fossil fuels