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Which of the following represents the correct hierarchy of organization in the human body?
-cells —> tissues —> organs —> organ systems
Maintaining the volume and composition of body fluids is the direct responsibility of which system?
Active chemicals found in chocolate, tea, coffee, and soft drinks are examples of which of the following?
Which gland secretes hormones that affect other endocrine glands?
The molting hormone of insects is:ecdsyone
Four of the five answers listed below are energy sources for muscles, Select the exception.
The most immediate, but necessarily limited, source of energy for reformation of ATP in muscle cells is:
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