Heat energy is
A. energy that flows between objects with different temperatures.
B. movement of ions or electrons.
C. stored energy that could do work but is not doing so.
D. energy that moves in waves.
E. the form of energy that actually does work.
A
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Many hormones synthesized in the gastrointestinal tract are chemically identical to brain neurotransmitters
Indicate whether the statement is true or false
The Na+/K+ ion pump is responsible for
A) diffusing chloride across the plasma membrane. B) transferring messages from enzyme-linked receptors to the cell nucleus. C) maintaining the sodium/potassium concentration gradients constant. D) initiating action potentials. E) amplifying signals using ATP.
Each lobule of a testicle contains a coiled length of:
a. vas deferens b. seminiferous tubule c. rete testis d. seminal duct
Two groups of people were tested to determine whether garlic lowers blood cholesterol levels. One group was given 800 mg of garlic powder daily for four months and exhibited an average 12% reduction in the blood cholesterol. The other group was not given any garlic and after four months averaged a 3% reduction in cholesterol. The group that was not given the garlic was the ________ group.
A. test B. peer C. control D. treatment E. double-blind