Which is a tiny structure located in the cytoplasm of a cell?

What is the fin on the backs of fish, some whales and dolphins called?

What is a cell that provides energy for another organism called?

What is the leaf of a fern called?

What is the cell where a virus reproduces called?

What process produces a duplicate of the original cell?

What was the largest living creature of the twentieth century?

Fish take in oxygen through their gills; what do insects take in oxygen through?

What part of the flower surrounds the inside parts of the flower?

Where in the human body are the anvil and stirrups located?

What is the waxy covering on plant leaves?

What vitamin does the sun's ultraviolet rays help the skin produce?

What organ filters blood and helps regulate salt and water levels?

What substance, found in food, helps move wastes through the body?

What is a hominid?

What is the sticky part of the pistil called?

What science word means "to group"?

What is the outside covering of a plant's root called?

What is the name of the largest shark?

What type of creature generally lives on land but starts life in the water?

What kind of plant stem is soft and green?

What is the correct plural of Keeshond?

Which doctor or team of doctors is credited with pioneering the scientific study of human sexuality?

Where in the body is blood produced?

From what tree did aspirin originally derive?