Which vitamin is produced when human skin is exposed to sunlight?

What is the process by which plants lose water through leaves called?

The human heart has how many chambers?

Which blood cells are primarily responsible for fighting infection?

Which gland is known as the master gland of the endocrine system?

What gas do plants absorb from the atmosphere during photosynthesis?

What is the study of heredity and variation in organisms called?

Photosynthesis primarily occurs in which part of a plant cell?

What type of bond holds the two strands of DNA together?

Which molecule carries genetic information in most organisms?

Which part of the human brain controls balance and coordination?