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 chemical messenger secreted by endocrine glands into the bloodstream called?
What is the term for the loss of water and electrolytes from the body?
Which part of the human brain controls balance and coordination?
What is the term for a community of organisms interacting with their physical environment?
What is the process by which green plants make their own food using sunlight?
Which part of a plant is primarily responsible for absorbing water from the soil?
What is the term for the complete set of chromosomes in a cell of an organism?
What is the term for proteins produced by B lymphocytes in response to specific antigens?
What is the term for the group of hormone-secreting glands in the body?
What term describes two different species living together where both benefit?
What is the function of lysosomes in animal cells?
Which scientist proposed the theory of evolution by natural selection?
What is the term for the first stage of the water cycle where water changes to vapor?
Which process by which bacteria take up free DNA from their environment was discovered by Griffith?
What gas do plants absorb from the atmosphere during photosynthesis?
Which type of tissue in plants transports dissolved food from leaves to other parts?
Which vitamin is essential for proper blood clotting in the human body?
Which type of immunity is provided by vaccination?
What is the process by which organisms adapt to extreme cold by entering a state of dormancy?
Which branch of biology deals with the study of viruses?