Bio final exam review

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable. In the example, 'months' is the independent variable.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food through photosynthesis or chemosynthesis. For example, bamboo is a producer.

Front

What does variation mean in genetics?

Back

Variation refers to the differences in genetic traits among individuals in a population, which can arise from mutations, gene shuffling, and other factors.

Front

What is a consumer in an ecosystem?

Back

A consumer is an organism that cannot produce its own food and instead obtains energy by feeding on other organisms. For example, a cougar is a consumer.

Front

What does it mean for bacteria to be antibiotic resistant?

Back

Antibiotic resistant bacteria can survive exposure to antibiotics, reproduce, and pass on the resistant genes to their offspring, making infections harder to treat.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil and helping to recycle matter in the ecosystem.

Front

Define inherited trait.

Back

An inherited trait is a characteristic or feature that is passed from parents to offspring through genes.

Front

What is the difference between a gene and a chromosome?

Back

A gene is a segment of DNA that contains the instructions for making a specific protein, while a chromosome is a long strand of DNA that contains many genes.

Front

What is the significance of biodiversity in an ecosystem?

Back

Biodiversity increases ecosystem resilience, productivity, and stability, allowing ecosystems to better withstand environmental changes.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.