A simple goiter is caused by a deficiency in
a. thyroxine.
b. triiodothyronine.
c. calcium.
d. iodine.
e. both thyroxine and triiodothyronine.
Answer: d
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Successful insertion of a DNA fragment into the polylinker region of pBluescript II is detected by
A) production of the enzyme ?-galactosidase. B) absence of the enzyme ?-galactosidase. C) the increased size of the plasmid. D) autoradiography. E) None of these
Which component of the flowering plant is considered the female portion of the plant?
A. corolla B. carpel C. stamen D. style
A diet high in omega-3 fatty acids obtained from various types of fish is recommended to reduce the risk of cardiovascular disease.
Answer the following statement true (T) or false (F)
A myeloid progenitor cell can differentiate into immune cells of the blood and lymph systems.
Answer the following statement true (T) or false (F)