Build a clear understanding of living organisms, cells, genetics, human systems and the environment through carefully selected practice questions.
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Which gas is released by organisms as a byproduct of cellular respiration?
Which organelle is known as the powerhouse of the cell?
Which type of disease is caused by a pathogen and can be transmitted from one person to another?
What is the scientific study of heredity and genetic variation called?
How many chambers does the human heart have?
What is the process by which green plants make their own food using sunlight?
Which scientist proposed the theory of evolution by natural selection?
Which type of organisms break down dead organic matter into simpler inorganic substances?