BCHS Biology Fall Exam Review 2024

BCHS Biology Fall Exam Review 2024

Assessment

Flashcard

Science

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is genetic drift?

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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