When magnesium loses electrons to become an ion, what does it become?
A. a covalent molecule
B. a cation
C. an anion
D. a new element
E. a free radical
B
You might also like to view...
The urinary bladder, found in the ________ region of the abdominopelvic cavity, is evenly divided between the two ________ abdominopelvic quadrants
A) iliac, upper B) hypogastric, lower C) umbilical, upper D) epigastric, lower
Alzheimer's disease is thought to involve primarily
A. loss of neurons that secrete or respond to dopamine. B. tumors that produce excess serotonin. C. loss of neurons that secrete or respond to catecholamines. D. loss of cholinergic neurons. E. loss of adrenergic neurons.
Which best describes the specific cause of Parkinson disease?
A. enhanced sensitivity of cholinergic receptors to acetylcholine B. reduced ability of neurons in the substantia nigra to release dopamine C. failure of serotonin receptors to bind with these neurohormones D. hyperactivity of metabolic enzymes that degrade dopamine E. natural tendency of basal nuclei to follow a daily recurring, oscillating cycle of rising and falling norepinephrine release
Diffusion occurs between the maternal blood flowing through the ________ and fetal blood flowing through vessels within the chorionic villi.
Fill in the blank(s) with the appropriate word(s).