Prepare Biology with confidence
Build a clear understanding of living organisms, cells, genetics, human systems and the environment through carefully selected practice questions.
Build a clear understanding of living organisms, cells, genetics, human systems and the environment through carefully selected practice questions.
Questions are tracked as practiced when you open Show Answer & Explanation. Tracking stays only in this browser tab and no subject-test result is saved.
What is the term for the smallest unit of heredity that determines a trait?
What is the term for the variety of different species present in a given habitat?
Which type of reproduction involves only one parent and produces genetically identical offspring?
What is the term for a substance that speeds up chemical reactions in living organisms?
What is the process by which plants lose water through leaves called?
What is the term for the growth of plant roots downward in response to gravity?
Which organ system includes the lungs and is responsible for gas exchange?
What is the basic structural and functional unit of all living organisms?
Which muscle type is found in the walls of internal organs and is involuntary?
Which type of disease is caused by a deficiency of essential nutrients in the diet?