Whether a germ cell develops into eggs or sperm is determined by
a. the presence of the X chromosome.
b. the presence of the Y chromosome.
c. the time at which meiosis begins during development.
d. the genetic sex of the individual.
e. whether or not meiosis and mitosis can occur.
C
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Metronidazole is used to treat Entamoeba infections.
Answer the following statement true (T) or false (F)
Large molecules that are formed by combining smaller molecules and are biologically significant are referred to as what?
a. DNA b. macromolecules c. monomers d. polymers
The secretion of which hormone decreases when calcium blood levels increase?
a. calcitonin b. parathyroid hormone c. thyroid hormone d. epinephrine e. norepinephrine
What do MDR TB and MRSA have in common?
A. Both are viruses. B. Both have seen their numbers of infections decline dramatically in recent years. C. Both are multidrug-resistant bacteria. D. Both are transmitted by mosquitoes. E. Both cause tuberculosis.