7th Grade Science Review

Front

What waste is eliminated by interactions between the respiratory and circulatory systems?

Back

Carbon dioxide

Front

Which of the following is NOT a secondary (accessory) digestive organ?

Back

Stomach

Front

What is a 'Hybrid' gene?

Back

When both alleles have different forms.

Front

What happens to the deer population on the opening day of hunting season?

Back

Decrease

Front

Which organs contract and relax to provide movement?

Back

Muscles

Front

What is the primary function of the respiratory system?

Back

To exchange gases (oxygen and carbon dioxide) between the body and the environment.

Front

What is the role of the liver in digestion?

Back

To produce bile, which helps in the digestion of fats.

Front

What is the function of the pancreas in the digestive system?

Back

To produce digestive enzymes and hormones like insulin.

Front

What is an ecosystem?

Back

A community of living organisms interacting with their environment.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms, while a food web is a complex network of interconnected food chains.