Some forms of dwarfism in children can be treated by ____________, which is(are) made by recombinant DNA techniques.
A) insulin
B) erythropoietin
C) human growth hormone
D) clones
E) Bacillus thuringiensis
C) human growth hormone
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The phenomenon through which populations of organisms change over several generations is termed ______.
A. homeostasis B. growth and development C. reproduction D. biological evolution E. organization
The presence of which of the following features
distinguishes prokaryotic cells from eukaryotic cells? a. cytoplasm b. nucleus c. ribosomes d. plasma membrane e. DNA
In humans, the allantois:a
stores embryonic nitrogenous wastes. b. eliminates nitrogenous wastes from the embryo. c. contributes to the formation of the blood vessels in the umbilical cord. d. secretes amniotic fluid. e. serves as a temporary center for formation of blood cells.
________________are special reproductive organs inside which gamete production occurs.
Fill in the blank(s) with the appropriate word(s).