Select the correct statement about isotopes
A) All the isotopes of an element have the same number of neutrons but differing numbers of electrons.
B) Isotopes of the same element have the same atomic number but differ in their mass number.
C) All the isotopes of an element are radioactive.
D) Isotopes occur only in the heavier elements.
B
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Osteoporosis is an example of which of the following?
A) Degenerative disorder B) Infection C) Congenital disorder D) Nerve disorder
Specialized lymphatic capillaries called lacteals are
A) located primarily in the large intestine. B) necessary for the transport of dietary lipids. C) part of the fenestrated capillary group. D) more numerous than blood capillaries. E) located throughout the body.
The placenta and its attached fetal membranes are collectively called the afterbirth
Indicate whether the statement is true or false
Which of the following is not a cause of Cushing syndrome?
A. Hyperactivity of the adrenal cortex B. Excess cortisol secretion C. Hyperactivity of the adrenal medulla D. ACTH hypersecretion by the pituitary E. ACTH-secreting tumors