We breathe more heavily during exercise because our cells
A) are producing more CO2 and need to get rid of it.
B) need more ADP to be converted to ATP.
C) need more glucose to be broken down.
A
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A scientist isolates a single-celled organism from the bottom of a sulfur hot spring. When examined under the microscope, it is clear that the cell is very small and contains no nucleus. Based on this evidence alone, in what domain of life is this organism?
A. Eukarya. B. Bacteria. C. Archaea. D. Either bacteria or archaea. E. It is impossible to determine anything based on this evidence alone.
Four of the five answers listed below are parts of the inner ear. Select the exception
a. eardrum b. oval window c. semicircular canals d. auditory nerve e. cochlea
Plasma contains all of the following components EXCEPT
A) hormones. B) albumin. C) water. D) lymph.
Which of the following secretes milk, sweat, saliva, or some other substance through a duct?
A. Connective tissue B. Endocrine gland C. Connective tissue D. Exocrine gland E. Microvillus