A lack of ATP in a contracted skeletal muscle cell would most likely cause
a. cross bridges to detach from actin
b. the sarcomeres to remain shortened
c. an inability to relax
d. both a and c
e. both b and c
E
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Each hemoglobin molecule contains
A) four alpha chains. B) one alpha and one beta chain. C) four iron ions. D) one heme group. E) two heme groups.
Hydrophobia is another name for ________________________________________
Fill in the blank(s) with correct word
What is a hormone?
A. a chemical released from a nerve cell that affects nearby cells across a synapse B. a chemical released from an endocrine gland that affects target cells without entering the bloodstream C. a chemical found in the blood that catalyzes the destruction of ingested toxins and foreign substances D. a chemical excreted from sweat gland that signals other individuals about the physiological status of the body E. a chemical regulator secreted from an endocrine gland that travels through the bloodstream to affect target cells
Because all action potentials are alike, how does the brain separate situations that require immediate attention from ordinary "positional" reports?
What will be an ideal response