Which correctly describes the structure of an atom?
A. There are always the same number of protons and neutrons.
B. There are always the same number of protons and electrons.
C. There are always the same number of neutrons and electrons.
D. The number of protons, neutrons, and electrons is always the same
E. There are never the same number of neutrons and protons.
B
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The muscles of the lower limb have a more limited range of motion than those of the upper limb.
Answer the following statement true (T) or false (F)
Energy requirements for smooth muscle contractions are generally higher than those for skeletal muscle contractions.
Answer the following statement true (T) or false (F)
The enzyme renin is responsible for the activation of
A) angiotensin I. B) cortisol. C) erythropoietin. D) atrial natriuretic peptide. E) adrenaline.
Which tissue type forms glands?
A. epithelial B. neuroectoderm C. connective D. muscle E. nervous