Front

What is a Paramecium?

Back

A Paramecium is a unicellular protist that lives in freshwater environments and is characterized by its slipper-like shape and cilia used for movement.

Front

What happens to a Paramecium when a chemical is added to its environment?

Back

The Paramecium may stop moving, indicating that its cilia or other structures are affected by the chemical.

Front

What is salivary amylase?

Back

Salivary amylase is an enzyme produced in the human saliva that breaks down starches into simpler sugars.

Front

What type of substances can salivary amylase not digest?

Back

Salivary amylase cannot digest lipids, nucleic acids, or proteins.

Front

What is the role of calcium carbonate (CaCO3) in marine organisms?

Back

Calcium carbonate is essential for marine organisms like clams to build their exoskeletons.

Front

How does increased atmospheric carbon dioxide affect oceanic carbon dioxide levels?

Back

As atmospheric carbon dioxide levels rise, more of it dissolves in the oceans, increasing oceanic carbon dioxide levels.

Front

What is a direct consequence of rising oceanic carbon dioxide levels for marine organisms?

Back

Many species of marine organisms will be weakened, making them unable to produce and maintain their shells.

Front

What do prokaryotic cells lack that eukaryotic cells have?

Back

Prokaryotic cells lack membrane-bound organelles and a nucleus, while eukaryotic cells contain both.

Front

What do both prokaryotic and eukaryotic cells contain?

Back

Both types of cells contain genetic material and cytoplasm.

Front

What is the Calvin Cycle?

Back

The Calvin Cycle is a series of biochemical reactions in photosynthesis that produces sugar from carbon dioxide.