What is genetic drift?
BCHS Biology Fall Exam Review 2024

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Science
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Genetic drift is a mechanism of evolution that involves a change in allele frequency due to random chance, particularly in small populations.
2.
FLASHCARD QUESTION
Front
What is an energy pyramid?
Back
An energy pyramid is a graphical representation of the energy available at each trophic level in an ecosystem, showing that energy decreases as you move up the pyramid.
3.
FLASHCARD QUESTION
Front
Which organisms are crucial for nitrogen cycling?
Back
Bacteria are the most important organisms for nitrogen cycling, as they convert nitrogen into forms usable by plants.
4.
FLASHCARD QUESTION
Front
What is commensalism?
Back
Commensalism is a symbiotic relationship where one organism benefits and the other is unaffected.
5.
FLASHCARD QUESTION
Front
What role do decomposers play in the carbon cycle?
Back
Decomposers release carbon into the atmosphere through the process of respiration.
6.
FLASHCARD QUESTION
Front
What is the role of producers in an ecosystem?
Back
Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.
7.
FLASHCARD QUESTION
Front
What is the difference between herbivores and carnivores?
Back
Herbivores are organisms that eat plants, while carnivores are organisms that eat other animals.
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